CVE-2023-53450

MediumCVSS 5.5/10Last modified Nov 5, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

VendorProductVersions
LinuxLinux>= c9de560ded61faa5b754137b7753da252391c55a, < d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b; >= c9de560ded61faa5b754137b7753da252391c55a, < ef16d8a1798db1a1604ac44ca1bd73ec6bebf483; >= c9de560ded61faa5b754137b7753da252391c55a, < 185062a21976fbc38f2efd296951b02c4500cf65; >= c9de560ded61faa5b754137b7753da252391c55a, < b0fc279de4bf17e1710bb7e83906538ff8f11111; >= c9de560ded61faa5b754137b7753da252391c55a, < 978e5e9111af18741449b81fefd531a622dd969a; >= c9de560ded61faa5b754137b7753da252391c55a, < d87a4e4094c9879fc8acdff8ce59fdffa979c8e0; >= c9de560ded61faa5b754137b7753da252391c55a, < bf2a16eb4e6d06124bd8436d4546f61539a65f29; >= c9de560ded61faa5b754137b7753da252391c55a, < 53c14e7cc2257191ba15425c15638fc4f8abb92b; >= c9de560ded61faa5b754137b7753da252391c55a, < 463808f237cf73e98a1a45ff7460c2406a150a0b
LinuxLinux2.6.25

References

Timeline

Published
Oct 1, 2025
Last modified
Nov 5, 2026
NVD status
Analyzed

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CVE-2023-53450: Medium severity, CVSS 5.5 | Vulnix