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Unrated severityNVD Advisory· Published Jul 5, 2024· Updated Nov 3, 2025

xfs: fix log recovery buffer allocation for the legacy h_size fixup

CVE-2024-39472

Description

In the Linux kernel, the following vulnerability has been resolved:

xfs: fix log recovery buffer allocation for the legacy h_size fixup

Commit a70f9fe52daa ("xfs: detect and handle invalid iclog size set by mkfs") added a fixup for incorrect h_size values used for the initial umount record in old xfsprogs versions. Later commit 0c771b99d6c9 ("xfs: clean up calculation of LR header blocks") cleaned up the log reover buffer calculation, but stoped using the fixed up h_size value to size the log recovery buffer, which can lead to an out of bounds access when the incorrect h_size does not come from the old mkfs tool, but a fuzzer.

Fix this by open coding xlog_logrec_hblks and taking the fixed h_size into account for this calculation.

Affected products

158

Patches

4
57835c0e7152
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit
f754591b17d0
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit
c2389c074973
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit
45cf976008dd
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.gitvia osv
commit

Vulnerability mechanics

Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

4

News mentions

0

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