CVE-2023-53450
MEDIUM severity · CVSS 5.5 · CWE-617
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUG_ON in ext4_mb_release_group_pa() If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the s_first_data_block is set to a very large number, the calculation of the block group can underflow, and trigger a BUG_ON check. Change this to be an ext4_warning so that we don't crash the kernel.
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/185062a21976fbc38f2efd296951b02c4500cf65 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/185062a21976fbc38f2efd296951b02c4500cf65Patch
- https://git.kernel.org/stable/c/463808f237cf73e98a1a45ff7460c2406a150a0bPatch
- https://git.kernel.org/stable/c/53c14e7cc2257191ba15425c15638fc4f8abb92bPatch
- https://git.kernel.org/stable/c/978e5e9111af18741449b81fefd531a622dd969aPatch
- https://git.kernel.org/stable/c/b0fc279de4bf17e1710bb7e83906538ff8f11111Patch
- https://git.kernel.org/stable/c/bf2a16eb4e6d06124bd8436d4546f61539a65f29Patch
- https://git.kernel.org/stable/c/d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5bPatch
- https://git.kernel.org/stable/c/d87a4e4094c9879fc8acdff8ce59fdffa979c8e0Patch