CVE-2023-53450
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…
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 5th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-617
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
- https://git.kernel.org/stable/c/ef16d8a1798db1a1604ac44ca1bd73ec6bebf483Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.