CVE-2024-50191
published 2024-11-08CVE-2024-50191: In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SB_RDONLY after filesystem errors When the filesystem is mounted with…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.20%
10.6th percentile
In the Linux kernel, the following vulnerability has been resolved:
ext4: don't set SB_RDONLY after filesystem errors
When the filesystem is mounted with errors=remount-ro, we were setting
SB_RDONLY flag to stop all filesystem modifications. We knew this misses
proper locking (sb->s_umount) and does not go through proper filesystem
remount procedure but it has been the way this worked since early ext2
days and it was good enough for catastrophic situation damage
mitigation. Recently, syzbot has found a way (see link) to trigger
warnings in filesystem freezing because the code got confused by
SB_RDONLY changing under its hands. Since these days we set
EXT4_FLAGS_SHUTDOWN on the superblock which is enough to stop all
filesystem modifications, modifying SB_RDONLY shouldn't be needed. So
stop doing that.
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.11.4-1 (forky) | linux 6.11.4-1 (forky) |
| debian | linux-6.1 | < linux 6.11.4-1 (forky) | linux 6.11.4-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= 95257987a6387f02970eda707e55a06cce734e18 < 58c0648e4c773f5b54f0cb63bc8c7c6bf52719a9 | 58c0648e4c773f5b54f0cb63bc8c7c6bf52719a9 |
| linux | linux | >= 95257987a6387f02970eda707e55a06cce734e18 < ee77c388469116565e009eaa704a60bc78489e09 | ee77c388469116565e009eaa704a60bc78489e09 |
| linux | linux | >= 95257987a6387f02970eda707e55a06cce734e18 < d3476f3dad4ad68ae5f6b008ea6591d1520da5d8 | d3476f3dad4ad68ae5f6b008ea6591d1520da5d8 |
| linux | linux_kernel | < 5.15.168 | 5.15.168 |
| linux | linux_kernel | >= 0 < 6.11.4-1 | 6.11.4-1 |
| linux | linux_kernel | >= 0 < 6.11.4-1 | 6.11.4-1 |
| linux | linux_kernel | >= 0 < 5.15.0-127.137 | 5.15.0-127.137 |
| linux | linux_kernel | >= 0 < 6.8.0-56.58 | 6.8.0-56.58 |
| linux | linux_kernel | >= 0 < 6.11.0-18.18 | 6.11.0-18.18 |
| linux | linux_kernel | >= 5.16 < 6.1.113 | 6.1.113 |
| linux | linux_kernel | >= 6.2 < 6.6.57 | 6.6.57 |
| linux | linux_kernel | >= 6.7 < 6.11.4 | 6.11.4 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5LOW
vendor_redhat5.5MEDIUM
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kernel: ext4: don't set SB_RDONLY after filesystem errors
vendor_redhat·2024-11-08·CVSS 5.5
CVE-2024-50191 [MEDIUM] CWE-833 kernel: ext4: don't set SB_RDONLY after filesystem errors
kernel: ext4: don't set SB_RDONLY after filesystem errors
In the Linux kernel, the following vulnerability has been resolved:
ext4: don't set SB_RDONLY after filesystem errors
When the filesystem is mounted with errors=remount-ro, we were setting
SB_RDONLY flag to stop all filesystem modifications. We knew this misses
proper locking (sb->s_umount) and does not go through proper filesystem
remount procedure but it has been the way this worked since early ext2
days and it was good enough for catastrophic situation damage
mitigation. Recently, syzbot has found a way (see link) to trigger
warnings in filesystem freezing because the code got confused by
SB_RDONLY changing under its hands. Since these days we set
EXT4_FLAGS_SHUTDOWN on the superblock which is enough to stop all
filesystem modif
Debian
CVE-2024-50191: linux - In the Linux kernel, the following vulnerability has been resolved: ext4: don't...
vendor_debian·2024·CVSS 5.5
CVE-2024-50191 [MEDIUM] CVE-2024-50191: linux - In the Linux kernel, the following vulnerability has been resolved: ext4: don't...
In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SB_RDONLY after filesystem errors When the filesystem is mounted with errors=remount-ro, we were setting SB_RDONLY flag to stop all filesystem modifications. We knew this misses proper locking (sb->s_umount) and does not go through proper filesystem remount procedure but it has been the way this worked since early ext2 days and it was good enough for catastrophic situation damage mitigation. Recently, syzbot has found a way (see link) to trigger warnings in filesystem freezing because the code got confused by SB_RDONLY changing under its hands. Since these days we set EXT4_FLAGS_SHUTDOWN on the superblock which is enough to stop all filesystem modifications, modifying SB_RDONLY shouldn't be needed. So stop
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This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Ublk userspace block driver;
- Virtio block driver;
- Compressed RAM block device driver;
- Bluetooth drivers;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto d
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Ublk userspace block driver;
- Virtio block driver;
- Compressed RAM block device driver;
- Bluetooth drivers;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware
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Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
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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;
- MIPS architecture;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- RAM backed block device driver;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- TPM device driver;
- Clock framework and drivers;
- Data acquisition framework and drivers;
- CPU frequency scaling framework;
- Hardware crypto device drivers;
- CXL (Compute Express Link
OSV
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Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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 informatio
OSV
linux-hwe-6.8 vulnerabilities
osv·2025-04-01·CVSS 8.8
CVE-2024-8805 [HIGH] linux-hwe-6.8 vulnerabilities
linux-hwe-6.8 vulnerabilities
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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 arch
OSV
linux-azure vulnerabilities
osv·2025-03-27·CVSS 8.8
CVE-2024-8805 [HIGH] linux-azure vulnerabilities
linux-azure vulnerabilities
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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.
(
OSV
linux-oem-6.8 vulnerabilities
osv·2025-03-27·CVSS 8.8
CVE-2024-8805 [HIGH] linux-oem-6.8 vulnerabilities
linux-oem-6.8 vulnerabilities
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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 arch
OSV
linux-realtime vulnerabilities
osv·2025-03-27·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:
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Drivers core;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- CPU frequency scaling framework;
- DAX dirext access to differentiated memory framework;
- GPU drivers;
- HID subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- Network drivers;
- NTB driver;
- Virtio pmem driver;
- Parport drivers;
- Pin controllers subsystem;
- SCSI subsystem;
- SuperH / SH-Mobile drivers;
- Direct Digital Synthesis drivers;
- Thermal drivers;
- TTY driver
OSV
linux, linux-aws, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oracle, linux-oracle-6.8
osv·2025-03-27·CVSS 5.5
[MEDIUM] linux, linux-aws, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oracle, linux-oracle-6.8
linux, linux-aws, linux-gcp, linux-gcp-6.8, linux-gke, linux-gkeop, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oracle, 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:
- ARM64 architecture;
- x86 architecture;
- Block layer subsystem;
- Drivers core;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- CPU frequency scaling framework;
- DAX dirext access to differentiated memory framework;
- GPU drivers;
- HID subsystem;
- I3C subsystem;
- IIO subsystem;
- InfiniBand drivers;
- IOMMU subsystem;
- IRQ chip drivers;
- Network drivers;
- NTB driver;
OSV
linux-ibm vulnerabilities
osv·2025-03-27·CVSS 8.8
CVE-2024-8805 [HIGH] linux-ibm vulnerabilities
linux-ibm vulnerabilities
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux
Kernel contained an improper access control vulnerability. A nearby
attacker could use this to connect a rougue device and possibly execute
arbitrary code. (CVE-2024-8805)
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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 architec
OSV
linux-oem-6.11 vulnerabilities
osv·2025-02-28
CVE-2025-0927 linux-oem-6.11 vulnerabilities
linux-oem-6.11 vulnerabilities
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
-
OSV
linux-aws, linux-azure, linux-gcp, linux-oracle, linux-raspi, linux-realtime vulnerabilities
osv·2025-02-19
linux-aws, linux-azure, linux-gcp, linux-oracle, linux-raspi, linux-realtime vulnerabilities
linux-aws, linux-azure, linux-gcp, linux-oracle, linux-raspi, 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;
- PowerPC architecture;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- RAM backed block device driver;
- Network block device driver;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bluetooth drivers;
- TPM device driver;
- Clock framework a
OSV
linux, linux-lowlatency vulnerabilities
osv·2025-02-19
CVE-2025-0927 linux, linux-lowlatency vulnerabilities
linux, linux-lowlatency vulnerabilities
Attila Szász discovered that the HFS+ file system implementation in the
Linux Kernel contained a heap overflow vulnerability. An attacker could use
a specially crafted file system image that, when mounted, could cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2025-0927)
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;
- RISC-V architecture;
- S390 architecture;
- SuperH RISC architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI d
OSV
linux-xilinx-zynqmp vulnerabilities
osv·2025-01-20
linux-xilinx-zynqmp vulnerabilities
linux-xilinx-zynqmp 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;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- TPM device driver;
- Clock framework and drivers;
- Buffer Sharing and Synchronization framework;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Input Device core drivers;
- Mailbox framework;
- Media drivers;
- Ethernet bonding driver;
- Network drivers;
- Mellanox network drivers;
- Microsoft Azure Network Adapter (MANA) driver;
- STMicroelectr
OSV
linux-azure, linux-intel-iotg-5.15 vulnerabilities
osv·2025-01-09·CVSS 8.8
CVE-2020-12351 [HIGH] linux-azure, linux-intel-iotg-5.15 vulnerabilities
linux-azure, linux-intel-iotg-5.15 vulnerabilities
Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)
Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)
Andy Nguyen discovered that the Bluetooth HCI event packet parser in the
Linux kernel did not properly handle event advertisements of certain sizes,
leading to a heap-based buffer overflow. A physically proximate remote
a
OSV
linux-azure-5.15 vulnerabilities
osv·2025-01-09·CVSS 8.8
CVE-2020-12351 [HIGH] linux-azure-5.15 vulnerabilities
linux-azure-5.15 vulnerabilities
Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)
Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)
Andy Nguyen discovered that the Bluetooth HCI event packet parser in the
Linux kernel did not properly handle event advertisements of certain sizes,
leading to a heap-based buffer overflow. A physically proximate remote
attacker could use
OSV
linux-intel-iotg vulnerabilities
osv·2025-01-06·CVSS 8.8
CVE-2020-12351 [HIGH] linux-intel-iotg vulnerabilities
linux-intel-iotg vulnerabilities
Andy Nguyen discovered that the Bluetooth L2CAP implementation in the Linux
kernel contained a type-confusion error. A physically proximate remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-12351)
Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)
Andy Nguyen discovered that the Bluetooth HCI event packet parser in the
Linux kernel did not properly handle event advertisements of certain sizes,
leading to a heap-based buffer overflow. A physically proximate remote
attacker could use
OSV
linux-hwe-5.15 vulnerabilities
osv·2024-12-20
linux-hwe-5.15 vulnerabilities
linux-hwe-5.15 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;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- TPM device driver;
- Clock framework and drivers;
- Buffer Sharing and Synchronization framework;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Input Device core drivers;
- Mailbox framework;
- Media drivers;
- Ethernet bonding driver;
- Network drivers;
- Mellanox network drivers;
- Microsoft Azure Network Adapter (MANA) driver;
- STMicroelectronics
OSV
linux-aws, linux-aws-5.15 vulnerabilities
osv·2024-12-17
linux-aws, linux-aws-5.15 vulnerabilities
linux-aws, linux-aws-5.15 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;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- TPM device driver;
- Clock framework and drivers;
- Buffer Sharing and Synchronization framework;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Input Device core drivers;
- Mailbox framework;
- Media drivers;
- Ethernet bonding driver;
- Network drivers;
- Mellanox network drivers;
- Microsoft Azure Network Adapter (MANA) driver;
- STMicro
OSV
linux, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi
osv·2024-12-17
linux, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi
linux, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, 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:
- ARM32 architecture;
- RISC-V architecture;
- S390 architecture;
- x86 architecture;
- Block layer subsystem;
- ACPI drivers;
- Drivers core;
- ATA over ethernet (AOE) driver;
- TPM device driver;
- Clock framework and drivers;
- Buffer Sharing and Synchronization framework;
- EFI core;
- GPIO subsystem;
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- InfiniBand drivers;
- Input Device core drive
GHSA
GHSA-639p-pgpg-5qr5: In the Linux kernel, the following vulnerability has been resolved:
ext4: don't set SB_RDONLY after filesystem errors
When the filesystem is mounted
ghsa_unreviewed·2024-11-08
CVE-2024-50191 [MEDIUM] GHSA-639p-pgpg-5qr5: In the Linux kernel, the following vulnerability has been resolved:
ext4: don't set SB_RDONLY after filesystem errors
When the filesystem is mounted
In the Linux kernel, the following vulnerability has been resolved:
ext4: don't set SB_RDONLY after filesystem errors
When the filesystem is mounted with errors=remount-ro, we were setting
SB_RDONLY flag to stop all filesystem modifications. We knew this misses
proper locking (sb->s_umount) and does not go through proper filesystem
remount procedure but it has been the way this worked since early ext2
days and it was good enough for catastrophic situation damage
mitigation. Recently, syzbot has found a way (see link) to trigger
warnings in filesystem freezing because the code got confused by
SB_RDONLY changing under its hands. Since these days we set
EXT4_FLAGS_SHUTDOWN on the superblock which is enough to stop all
filesystem modifications, modifying SB_RDONLY shouldn't be needed. So
sto
OSV
CVE-2024-50191: In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SB_RDONLY after filesystem errors When the filesystem is mounted w
osv·2024-11-08·CVSS 5.5
CVE-2024-50191 [MEDIUM] CVE-2024-50191: In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SB_RDONLY after filesystem errors When the filesystem is mounted w
In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SB_RDONLY after filesystem errors When the filesystem is mounted with errors=remount-ro, we were setting SB_RDONLY flag to stop all filesystem modifications. We knew this misses proper locking (sb->s_umount) and does not go through proper filesystem remount procedure but it has been the way this worked since early ext2 days and it was good enough for catastrophic situation damage mitigation. Recently, syzbot has found a way (see link) to trigger warnings in filesystem freezing because the code got confused by SB_RDONLY changing under its hands. Since these days we set EXT4_FLAGS_SHUTDOWN on the superblock which is enough to stop all filesystem modifications, modifying SB_RDONLY shouldn't be needed. So stop
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-11-08
Published