CVE-2023-53457
MEDIUM severity · CVSS 5.5 · CWE-476
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Fix null-ptr-deref Read in txBegin Syzkaller reported an issue where txBegin may be called on a superblock in a read-only mounted filesystem which leads to NULL pointer deref. This could be solved by checking if the filesystem is read-only before calling txBegin, and returning with appropiate error code.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0eaPatch
- https://git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1Patch
- https://git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3Patch
- https://git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15Patch
- https://git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27Patch
- https://git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84dPatch
- https://git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2Patch
- https://git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8Patch