CVE-2024-38570
published 2024-06-19CVE-2024-38570: In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix potential glock use-after-free on unmount When a DLM lockspace is released and…
PriorityP337high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.25%
16.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix potential glock use-after-free on unmount
When a DLM lockspace is released and there ares still locks in that
lockspace, DLM will unlock those locks automatically. Commit
fb6791d100d1b started exploiting this behavior to speed up filesystem
unmount: gfs2 would simply free glocks it didn't want to unlock and then
release the lockspace. This didn't take the bast callbacks for
asynchronous lock contention notifications into account, which remain
active until until a lock is unlocked or its lockspace is released.
To prevent those callbacks from accessing deallocated objects, put the
glocks that should not be unlocked on the sd_dead_glocks list, release
the lockspace, and only then free those glocks.
As an additional measure, ignore unexpected ast and bast callbacks if
the receiving glock is dead.
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.8.12-1 (forky) | linux 6.8.12-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 < 0636b34b44589b142700ac137b5f69802cfe2e37 | 0636b34b44589b142700ac137b5f69802cfe2e37 |
| linux | linux | >= fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 < e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0 | e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0 |
| linux | linux | >= fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 < 501cd8fabf621d10bd4893e37f6ce6c20523c8ca | 501cd8fabf621d10bd4893e37f6ce6c20523c8ca |
| linux | linux | >= fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 < d98779e687726d8f8860f1c54b5687eec5f63a73 | d98779e687726d8f8860f1c54b5687eec5f63a73 |
| linux | linux_kernel | >= 0 < 6.8.12-1 | 6.8.12-1 |
| linux | linux_kernel | >= 0 < 6.8.12-1 | 6.8.12-1 |
| linux | linux_kernel | >= 0 < 5.4.0-196.216 | 5.4.0-196.216 |
| linux | linux_kernel | >= 0 < 5.15.0-122.132 | 5.15.0-122.132 |
| linux | linux_kernel | >= 0 < 6.8.0-40.40 | 6.8.0-40.40 |
| linux | linux_kernel | >= 0 < 4.4.0-259.293 | 4.4.0-259.293 |
| linux | linux_kernel | >= 0 < 4.15.0-229.241 | 4.15.0-229.241 |
| linux | linux_kernel | >= 3.8 < 6.6.33 | 6.6.33 |
| linux | linux_kernel | >= 6.7 < 6.8.12 | 6.8.12 |
| linux | linux_kernel | >= 6.9 < 6.9.3 | 6.9.3 |
| msrc | azl3_kernel_6.6.22.1-2_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.35.1-5_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_kernel_5.15.180.1-1_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_ubuntu6.5MEDIUM
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An attacker could possibly use these to compromise the system.
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- Greybus drivers;
- Modular ISDN driver;
- Multiple devices driver;
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An attacker could possibly use these to compromise the system.
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- OpenRISC architecture;
- PowerPC architecture;
- RISC-V architecture;
- x86 architecture;
- Block layer subsystem;
- Accessibility subsystem;
- Bluetooth drivers;
- Clock framework and drivers;
- CPU frequency scaling framework;
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OSV
CVE-2024-38570: In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix potential glock use-after-free on unmount When a DLM lockspace is releas
osv·2024-06-19·CVSS 7.8
CVE-2024-38570 [HIGH] CVE-2024-38570: In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix potential glock use-after-free on unmount When a DLM lockspace is releas
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix potential glock use-after-free on unmount When a DLM lockspace is released and there ares still locks in that lockspace, DLM will unlock those locks automatically. Commit fb6791d100d1b started exploiting this behavior to speed up filesystem unmount: gfs2 would simply free glocks it didn't want to unlock and then release the lockspace. This didn't take the bast callbacks for asynchronous lock contention notifications into account, which remain active until until a lock is unlocked or its lockspace is released. To prevent those callbacks from accessing deallocated objects, put the glocks that should not be unlocked on the sd_dead_glocks list, release the lockspace, and only then free those glocks. As an additional
GHSA
GHSA-3wjv-2739-3h75: In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix potential glock use-after-free on unmount
When a DLM lockspace is rele
ghsa_unreviewed·2024-06-19
CVE-2024-38570 [HIGH] CWE-416 GHSA-3wjv-2739-3h75: In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix potential glock use-after-free on unmount
When a DLM lockspace is rele
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix potential glock use-after-free on unmount
When a DLM lockspace is released and there ares still locks in that
lockspace, DLM will unlock those locks automatically. Commit
fb6791d100d1b started exploiting this behavior to speed up filesystem
unmount: gfs2 would simply free glocks it didn't want to unlock and then
release the lockspace. This didn't take the bast callbacks for
asynchronous lock contention notifications into account, which remain
active until until a lock is unlocked or its lockspace is released.
To prevent those callbacks from accessing deallocated objects, put the
glocks that should not be unlocked on the sd_dead_glocks list, release
the lockspace, and only then free those glocks.
As an additio
Ubuntu
Linux kernel (IoT) vulnerabilities
vendor_ubuntu·2024-11-19·CVSS 6.3
CVE-2024-46828 [MEDIUM] Linux kernel (IoT) vulnerabilities
Title: Linux kernel (IoT) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux
kernel contained an integer overflow vulnerability. A local attacker could
use this to cause a denial of service (system crash). (CVE-2022-36402)
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;
- PowerPC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Android drivers;
- Serial ATA and Parallel ATA drivers;
- ATM drivers;
- Drivers core;
- CPU frequency scaling framework;
- Device frequency scaling
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-10-31·CVSS 5.5
CVE-2024-26677 [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:
- GPU drivers;
- BTRFS file system;
- F2FS file system;
- GFS2 file system;
- BPF subsystem;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2024-27012, CVE-2024-38570, CVE-2024-42228, CVE-2024-41009,
CVE-2024-39494, CVE-2024-42160, CVE-2024-39496, CVE-2024-26677)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new vers
Ubuntu
Linux kernel (Azure) vulnerabilities
vendor_ubuntu·2024-10-17·CVSS 5.5
CVE-2024-42154 [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 JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash).
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:
- GPU drivers;
- Greybus drivers;
- Modular ISDN driver;
- Multiple devices driver;
- Network drivers;
- SCSI drivers;
- VFIO drivers;
- F2FS file system;
- GFS2 file system;
- JFS file system;
- NILFS2 file system;
- Kernel debugger infrastructure;
- Bluetooth subsystem;
- IPv4 networking;
- L2TP prot
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-10-10·CVSS 5.5
CVE-2024-42160 [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:
- GPU drivers;
- Modular ISDN driver;
- MMC subsystem;
- SCSI drivers;
- F2FS file system;
- GFS2 file system;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2021-47188, CVE-2024-39494, CVE-2022-48791, CVE-2022-48863,
CVE-2024-42228, CVE-2024-38570, CVE-2024-42160, CVE-2024-26787,
CVE-2024-27012, CVE-2024-26677)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI ch
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-10-03·CVSS 5.5
CVE-2024-42228 [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:
- GPU drivers;
- BTRFS file system;
- F2FS file system;
- GFS2 file system;
- BPF subsystem;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2024-41009, CVE-2024-26677, CVE-2024-42160, CVE-2024-39494,
CVE-2024-39496, CVE-2024-38570, CVE-2024-27012, CVE-2024-42228)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new vers
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-10-01·CVSS 5.5
CVE-2022-48863 [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:
- GPU drivers;
- Modular ISDN driver;
- MMC subsystem;
- SCSI drivers;
- F2FS file system;
- GFS2 file system;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2021-47188, CVE-2024-42160, CVE-2024-42228, CVE-2022-48863,
CVE-2024-26677, CVE-2024-26787, CVE-2024-38570, CVE-2024-39494,
CVE-2022-48791, CVE-2024-27012)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI ch
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-26·CVSS 5.5
CVE-2024-42228 [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:
- GPU drivers;
- BTRFS file system;
- F2FS file system;
- GFS2 file system;
- BPF subsystem;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2024-39494, CVE-2024-38570, CVE-2024-27012, CVE-2024-39496,
CVE-2024-42160, CVE-2024-41009, CVE-2024-42228, CVE-2024-26677)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new vers
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-26·CVSS 5.5
CVE-2021-47188 [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:
- GPU drivers;
- Input Device (Tablet) drivers;
- Modular ISDN driver;
- Multiple devices driver;
- Network drivers;
- Near Field Communication (NFC) drivers;
- SCSI drivers;
- GCT GDM724x LTE driver;
- USB subsystem;
- VFIO drivers;
- GFS2 file system;
- JFS file system;
- NILFS2 file system;
- Networking core;
- IPv4 networking;
- L2TP protocol;
- Netfilter;
- RxRPC session sockets;
(CVE-2024-26651, CVE-2024-38583, CVE-2023-52527, CVE-2024-26880,
CVE-2022-48850, CVE-2024-26733, CVE-2021-47188, CVE-2024-42154,
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-23·CVSS 5.5
CVE-2024-39494 [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:
- GPU drivers;
- BTRFS file system;
- F2FS file system;
- GFS2 file system;
- BPF subsystem;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2024-27012, CVE-2024-39496, CVE-2024-26677, CVE-2024-42228,
CVE-2024-38570, CVE-2024-39494, CVE-2024-42160, CVE-2024-41009)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new vers
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-23·CVSS 5.5
CVE-2024-26880 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the JFS file system contained an out-of-bounds read
vulnerability when printing xattr debug information. A local attacker could
use this to cause a denial of service (system crash).
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:
- GPU drivers;
- Greybus drivers;
- Modular ISDN driver;
- Multiple devices driver;
- Network drivers;
- SCSI drivers;
- VFIO drivers;
- F2FS file system;
- GFS2 file system;
- JFS file system;
- NILFS2 file system;
- Kernel debugger infrastructure;
- Bluetooth subsystem;
- IPv4 networking;
- L2TP protocol;
-
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-18·CVSS 5.5
CVE-2024-42160 [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:
- GPU drivers;
- BTRFS file system;
- F2FS file system;
- GFS2 file system;
- BPF subsystem;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2024-39496, CVE-2024-41009, CVE-2024-26677, CVE-2024-42160,
CVE-2024-27012, CVE-2024-42228, CVE-2024-39494, CVE-2024-38570)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new vers
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-09-18·CVSS 5.5
CVE-2022-48863 [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:
- GPU drivers;
- Modular ISDN driver;
- MMC subsystem;
- SCSI drivers;
- F2FS file system;
- GFS2 file system;
- Netfilter;
- RxRPC session sockets;
- Integrity Measurement Architecture(IMA) framework;
(CVE-2021-47188, CVE-2024-27012, CVE-2024-42228, CVE-2022-48791,
CVE-2024-39494, CVE-2022-48863, CVE-2024-26787, CVE-2024-42160,
CVE-2024-38570, CVE-2024-26677)
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI ch
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-08-13
CVE-2024-36905 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;
- M68K architecture;
- OpenRISC architecture;
- PowerPC architecture;
- RISC-V architecture;
- x86 architecture;
- Block layer subsystem;
- Accessibility subsystem;
- Bluetooth drivers;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- DPLL subsystem;
- FireWire subsystem;
- EFI core;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- Microsoft Hyper-V drivers;
- InfiniBand drivers
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2024-08-12
CVE-2024-38548 Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) 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;
- M68K architecture;
- OpenRISC architecture;
- PowerPC architecture;
- RISC-V architecture;
- x86 architecture;
- Block layer subsystem;
- Accessibility subsystem;
- Bluetooth drivers;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- DPLL subsystem;
- FireWire subsystem;
- EFI core;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- Microsoft Hyper-V drivers;
- InfiniBand d
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-08-09·CVSS 6.5
CVE-2024-36029 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Benedict Schlüter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde
discovered that an untrusted hypervisor could inject malicious #VC
interrupts and compromise the security guarantees of AMD SEV-SNP. This flaw
is known as WeSee. A local attacker in control of the hypervisor could use
this to expose sensitive information or possibly execute arbitrary code in
the trusted execution environment. (CVE-2024-25742)
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;
- M68K architecture;
- OpenRISC architecture;
- PowerPC
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-08-08
CVE-2024-36952 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;
- M68K architecture;
- OpenRISC architecture;
- PowerPC architecture;
- RISC-V architecture;
- x86 architecture;
- Block layer subsystem;
- Accessibility subsystem;
- Bluetooth drivers;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- DMA engine subsystem;
- DPLL subsystem;
- FireWire subsystem;
- EFI core;
- Qualcomm firmware drivers;
- GPIO subsystem;
- GPU drivers;
- Microsoft Hyper-V drivers;
- InfiniBand drivers
Red Hat
kernel: gfs2: Fix potential glock use-after-free on unmount
vendor_redhat·2024-06-19·CVSS 7.8
CVE-2024-38570 [HIGH] CWE-416 kernel: gfs2: Fix potential glock use-after-free on unmount
kernel: gfs2: Fix potential glock use-after-free on unmount
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix potential glock use-after-free on unmount
When a DLM lockspace is released and there ares still locks in that
lockspace, DLM will unlock those locks automatically. Commit
fb6791d100d1b started exploiting this behavior to speed up filesystem
unmount: gfs2 would simply free glocks it didn't want to unlock and then
release the lockspace. This didn't take the bast callbacks for
asynchronous lock contention notifications into account, which remain
active until until a lock is unlocked or its lockspace is released.
To prevent those callbacks from accessing deallocated objects, put the
glocks that should not be unlocked on the sd_dead_glocks list, release
the
Microsoft
gfs2: Fix potential glock use-after-free on unmount
vendor_msrc·2024-06-11·CVSS 7.8
CVE-2024-38570 [HIGH] CWE-416 gfs2: Fix potential glock use-after-free on unmount
gfs2: Fix potential glock use-after-free on unmount
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.mic
Debian
CVE-2024-38570: linux - In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix p...
vendor_debian·2024·CVSS 7.8
CVE-2024-38570 [HIGH] CVE-2024-38570: linux - In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix p...
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix potential glock use-after-free on unmount When a DLM lockspace is released and there ares still locks in that lockspace, DLM will unlock those locks automatically. Commit fb6791d100d1b started exploiting this behavior to speed up filesystem unmount: gfs2 would simply free glocks it didn't want to unlock and then release the lockspace. This didn't take the bast callbacks for asynchronous lock contention notifications into account, which remain active until until a lock is unlocked or its lockspace is released. To prevent those callbacks from accessing deallocated objects, put the glocks that should not be unlocked on the sd_dead_glocks list, release the lockspace, and only then free those glocks. As an additional
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37https://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8cahttps://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73https://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0https://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37https://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8cahttps://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73https://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0
2024-06-19
Published