CVE-2025-21945
published 2025-04-01CVE-2025-21945: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock…
PriorityP337high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.48%
38.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb2_lock
If smb_lock->zero_len has value, ->llist of smb_lock is not delete and
flock is old one. It will cause use-after-free on error handling
routine.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.133-1 (bookworm) | linux 6.1.133-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.133-1 (bookworm) | linux 6.1.133-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 410ce35a2ed6d0e114132bba29af49b69880c8c7 | 410ce35a2ed6d0e114132bba29af49b69880c8c7 |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 8573571060ca466cbef2c6f03306b2cc7b883506 | 8573571060ca466cbef2c6f03306b2cc7b883506 |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < a0609097fd10d618aed4864038393dd75131289e | a0609097fd10d618aed4864038393dd75131289e |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 636e021646cf9b52ddfea7c809b018e91f2188cb | 636e021646cf9b52ddfea7c809b018e91f2188cb |
| linux | linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf < 84d2d1641b71dec326e8736a749b7ee76a9599fc | 84d2d1641b71dec326e8736a749b7ee76a9599fc |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.1.133-1 | 6.1.133-1 |
| linux | linux_kernel | >= 0 < 6.12.19-1 | 6.12.19-1 |
| linux | linux_kernel | >= 0 < 6.12.19-1 | 6.12.19-1 |
| linux | linux_kernel | >= 0 < 6.8.0-84.84 | 6.8.0-84.84 |
| linux | linux_kernel | >= 5.15 < 6.1.131 | 6.1.131 |
| linux | linux_kernel | >= 6.13 < 6.13.7 | 6.13.7 |
| linux | linux_kernel | >= 6.2 < 6.6.83 | 6.6.83 |
| linux | linux_kernel | >= 6.7 < 6.12.19 | 6.12.19 |
| msrc | azl3_kernel_6.6.82.1-1_on_azure_linux_3.0 | — | — |
| msrc | cbl2_kernel_5.15.182.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu5.9MEDIUM
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VulDB
Linux Kernel up to 6.1.130/6.6.82/6.12.18/6.13.6 ksmbd smb2_lock use after free (Nessus ID 234309 / WID-SEC-2025-0683)
vuldb·2026-07-31·CVSS 7.8
CVE-2025-21945 [HIGH] Linux Kernel up to 6.1.130/6.6.82/6.12.18/6.13.6 ksmbd smb2_lock use after free (Nessus ID 234309 / WID-SEC-2025-0683)
A vulnerability was found in Linux Kernel up to 6.1.130/6.6.82/6.12.18/6.13.6. It has been rated as critical. This affects the function smb2_lock of the component ksmbd. Performing a manipulation results in use after free.
This vulnerability was named CVE-2025-21945. The attack needs to be approached within the local network. There is no available exploit.
Upgrading the affected component is advised.
OSV
linux-oracle-6.8 vulnerabilities
osv·2025-10-15·CVSS 5.5
[MEDIUM] linux-oracle-6.8 vulnerabilities
linux-oracle-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector S
OSV
linux-azure-nvidia vulnerabilities
osv·2025-10-08·CVSS 5.5
[MEDIUM] linux-azure-nvidia vulnerabilities
linux-azure-nvidia vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector
OSV
linux-oracle vulnerabilities
osv·2025-10-06·CVSS 4.7
[MEDIUM] linux-oracle vulnerabilities
linux-oracle vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector Syste
OSV
linux-azure, linux-azure-6.8 vulnerabilities
osv·2025-10-02·CVSS 5.5
[MEDIUM] linux-azure, linux-azure-6.8 vulnerabilities
linux-azure, linux-azure-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C
OSV
linux-raspi-realtime vulnerabilities
osv·2025-10-02·CVSS 4.7
[MEDIUM] linux-raspi-realtime vulnerabilities
linux-raspi-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector System Software Int
OSV
linux-hwe-6.8 vulnerabilities
osv·2025-10-02·CVSS 5.5
[MEDIUM] linux-hwe-6.8 vulnerabilities
linux-hwe-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector Syst
OSV
linux-raspi vulnerabilities
osv·2025-10-01·CVSS 5.5
[MEDIUM] linux-raspi vulnerabilities
linux-raspi vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector System Software Interface dr
OSV
linux-hwe-6.8 vulnerabilities
osv·2025-09-26·CVSS 5.5
[MEDIUM] linux-hwe-6.8 vulnerabilities
linux-hwe-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector Syst
OSV
linux-ibm, linux-ibm-6.8 vulnerabilities
osv·2025-09-25·CVSS 5.5
[MEDIUM] linux-ibm, linux-ibm-6.8 vulnerabilities
linux-ibm, linux-ibm-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Con
OSV
linux-realtime-6.8 vulnerabilities
osv·2025-09-25·CVSS 5.5
[MEDIUM] linux-realtime-6.8 vulnerabilities
linux-realtime-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector
OSV
linux-realtime vulnerabilities
osv·2025-09-24·CVSS 5.5
[MEDIUM] linux-realtime vulnerabilities
linux-realtime vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C Connector Sys
OSV
linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
osv·2025-09-24·CVSS 5.5
[MEDIUM] linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Contr
OSV
linux-aws-6.8, linux-gcp-6.8 vulnerabilities
osv·2025-09-24·CVSS 5.5
[MEDIUM] linux-aws-6.8, linux-gcp-6.8 vulnerabilities
linux-aws-6.8, linux-gcp-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers;
- Renesas USBHS Controller drivers;
- USB Type-C
OSV
linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities
osv·2025-09-24·CVSS 5.5
[MEDIUM] linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities
linux, linux-aws, linux-gcp, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
OSV
linux-azure, linux-azure-6.11 vulnerabilities
osv·2025-07-08·CVSS 5.9
CVE-2025-2312 [MEDIUM] linux-azure, linux-azure-6.11 vulnerabilities
linux-azure, linux-azure-6.11 vulnerabilities
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DMA engine subsystem;
- DPLL subsystem;
- Qualcomm firmware driv
OSV
linux-lowlatency, linux-lowlatency-hwe-6.11 vulnerabilities
osv·2025-07-04·CVSS 5.9
CVE-2025-2312 [MEDIUM] linux-lowlatency, linux-lowlatency-hwe-6.11 vulnerabilities
linux-lowlatency, linux-lowlatency-hwe-6.11 vulnerabilities
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DMA engine subsystem;
- DPLL subsystem;
- Qualcomm
OSV
linux-oem-6.11 vulnerabilities
osv·2025-06-30·CVSS 5.9
CVE-2025-2312 [MEDIUM] linux-oem-6.11 vulnerabilities
linux-oem-6.11 vulnerabilities
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DMA engine subsystem;
- DPLL subsystem;
- Qualcomm firmware drivers;
- GPIO sub
OSV
linux, linux-aws, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oracle, linux-raspi, linux-realtime vulnerabilities
osv·2025-06-30·CVSS 5.9
CVE-2025-2312 [MEDIUM] linux, linux-aws, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oracle, linux-raspi, linux-realtime vulnerabilities
linux, linux-aws, linux-gcp, linux-gcp-6.11, linux-hwe-6.11, linux-oracle, linux-raspi, linux-realtime vulnerabilities
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and dr
OSV
CVE-2025-21945: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of
osv·2025-04-01·CVSS 7.8
CVE-2025-21945 [HIGH] CVE-2025-21945: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
GHSA
GHSA-5g8p-x9mm-c9vr: In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb2_lock
If smb_lock->zero_len has value, ->llist
ghsa_unreviewed·2025-04-01
CVE-2025-21945 [HIGH] CWE-416 GHSA-5g8p-x9mm-c9vr: In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb2_lock
If smb_lock->zero_len has value, ->llist
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb2_lock
If smb_lock->zero_len has value, ->llist of smb_lock is not delete and
flock is old one. It will cause use-after-free on error handling
routine.
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-10-15·CVSS 5.5
CVE-2025-21991 [MEDIUM] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
-
Ubuntu
Linux kernel (Azure, N-Series) vulnerabilities
vendor_ubuntu·2025-10-08·CVSS 5.5
CVE-2025-21891 [MEDIUM] Linux kernel (Azure, N-Series) vulnerabilities
Title: Linux kernel (Azure, N-Series) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS sub
Ubuntu
Linux kernel (Oracle) vulnerabilities
vendor_ubuntu·2025-10-06·CVSS 4.7
CVE-2025-21946 [MEDIUM] Linux kernel (Oracle) vulnerabilities
Title: Linux kernel (Oracle) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
-
Ubuntu
Linux kernel (Raspberry Pi Real-time) vulnerabilities
vendor_ubuntu·2025-10-02·CVSS 5.5
CVE-2025-37889 [MEDIUM] Linux kernel (Raspberry Pi Real-time) vulnerabilities
Title: Linux kernel (Raspberry Pi Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB D
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2025-10-02·CVSS 5.5
CVE-2025-37889 [MEDIUM] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- US
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-10-02·CVSS 5.5
CVE-2025-21941 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
-
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2025-10-01·CVSS 5.5
CVE-2025-37889 [MEDIUM] Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL drivers
Ubuntu
Linux kernel (HWE) vulnerabilities
vendor_ubuntu·2025-09-26·CVSS 5.5
CVE-2025-21981 [MEDIUM] Linux kernel (HWE) vulnerabilities
Title: Linux kernel (HWE) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- US
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2025-09-25·CVSS 5.5
CVE-2025-21970 [MEDIUM] Linux kernel (Real-time) vulnerabilities
Title: Linux kernel (Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem
Ubuntu
Linux kernel (IBM) vulnerabilities
vendor_ubuntu·2025-09-25·CVSS 5.5
CVE-2025-21981 [MEDIUM] Linux kernel (IBM) vulnerabilities
Title: Linux kernel (IBM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- US
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-09-24·CVSS 5.5
CVE-2025-21963 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL
Ubuntu
Linux kernel (NVIDIA) vulnerabilities
vendor_ubuntu·2025-09-24·CVSS 5.5
CVE-2025-21963 [MEDIUM] Linux kernel (NVIDIA) vulnerabilities
Title: Linux kernel (NVIDIA) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
-
Ubuntu
Linux kernel (Real-time) vulnerabilities
vendor_ubuntu·2025-09-24·CVSS 5.5
CVE-2025-22015 [MEDIUM] Linux kernel (Real-time) vulnerabilities
Title: Linux kernel (Real-time) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-09-24·CVSS 5.5
CVE-2025-21963 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- x86 architecture;
- Compute Acceleration Framework;
- Bus devices;
- AMD CDX bus driver;
- DPLL subsystem;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Multiple devices driver;
- Network drivers;
- Mellanox network drivers;
- NVME drivers;
- Pin controllers subsystem;
- RapidIO drivers;
- Voltage and Current Regulator drivers;
- SCSI subsystem;
- SLIMbus drivers;
- QCOM SoC drivers;
- UFS subsystem;
- USB DSL
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2025-07-08·CVSS 5.9
CVE-2025-22095 [MEDIUM] Linux kernel (Azure) vulnerabilities
Title: Linux kernel (Azure) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
-
Ubuntu
Linux kernel (Low Latency) vulnerabilities
vendor_ubuntu·2025-07-04·CVSS 5.9
CVE-2025-22080 [MEDIUM] Linux kernel (Low Latency) vulnerabilities
Title: Linux kernel (Low Latency) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drive
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2025-06-30·CVSS 5.9
CVE-2025-22080 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DMA engi
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2025-06-30·CVSS 5.9
CVE-2025-22070 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DM
Microsoft
ksmbd: fix use-after-free in smb2_lock
vendor_msrc·2025-04-08·CVSS 7.8
CVE-2025-21945 [HIGH] ksmbd: fix use-after-free in smb2_lock
ksmbd: fix use-after-free in smb2_lock
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/en
Red Hat
kernel: ksmbd: fix use-after-free in smb2_lock
vendor_redhat·2025-04-01·CVSS 7.8
CVE-2025-21945 [HIGH] CWE-416 kernel: ksmbd: fix use-after-free in smb2_lock
kernel: ksmbd: fix use-after-free in smb2_lock
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb2_lock
If smb_lock->zero_len has value, ->llist of smb_lock is not delete and
flock is old one. It will cause use-after-free on error handling
routine.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel (Red Hat Enterprise Linux 9) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 9) - Not affected
Debian
CVE-2025-21945: linux - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix ...
vendor_debian·2025·CVSS 7.8
CVE-2025-21945 [HIGH] CVE-2025-21945: linux - In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix ...
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
Scope: local
bookworm: resolved (fixed in 6.1.133-1)
bullseye: resolved
forky: resolved (fixed in 6.12.19-1)
sid: resolved (fixed in 6.12.19-1)
trixie: resolved (fixed in 6.12.19-1)
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/410ce35a2ed6d0e114132bba29af49b69880c8c7https://git.kernel.org/stable/c/636e021646cf9b52ddfea7c809b018e91f2188cbhttps://git.kernel.org/stable/c/84d2d1641b71dec326e8736a749b7ee76a9599fchttps://git.kernel.org/stable/c/8573571060ca466cbef2c6f03306b2cc7b883506https://git.kernel.org/stable/c/a0609097fd10d618aed4864038393dd75131289ehttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
2025-04-01
Published