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CVE-2023-53450

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CVE-2023-53450

Published: Oct 1, 2025

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
c9de560ded61faa5b754137b7753da252391c55a - < d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b
affected
c9de560ded61faa5b754137b7753da252391c55a - < ef16d8a1798db1a1604ac44ca1bd73ec6bebf483
affected
c9de560ded61faa5b754137b7753da252391c55a - < 185062a21976fbc38f2efd296951b02c4500cf65
affected
c9de560ded61faa5b754137b7753da252391c55a - < b0fc279de4bf17e1710bb7e83906538ff8f11111
affected
c9de560ded61faa5b754137b7753da252391c55a - < 978e5e9111af18741449b81fefd531a622dd969a

+4 more versions

Linux

Linux

affected
2.6.25
unaffected
0 - < 2.6.25
unaffected
4.14.315 - <= 4.14.*
unaffected
4.19.283 - <= 4.19.*
unaffected
5.4.243 - <= 5.4.*

+6 more versions

References

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