CVE-2024-39472 (GCVE-0-2024-39472)

Vulnerability from cvelistv5 – Published: 2024-07-05 06:42 – Updated: 2025-11-03 21:56
VLAI?
Title
xfs: fix log recovery buffer allocation for the legacy h_size fixup
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0c771b99d6c9a0552fea5cc43669b726dad8f659 , < f754591b17d0ee91c2b45fe9509d0cdc420527cb (git)
Affected: 0c771b99d6c9a0552fea5cc43669b726dad8f659 , < 57835c0e7152e36b03875dd6c56dfeed685c1b1f (git)
Affected: 0c771b99d6c9a0552fea5cc43669b726dad8f659 , < c2389c074973aa94e34992e7f66dac0de37595b5 (git)
Affected: 0c771b99d6c9a0552fea5cc43669b726dad8f659 , < 45cf976008ddef4a9c9a30310c9b4fb2a9a6602a (git)
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    Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.105 , ≤ 6.1.* (semver)
Unaffected: 6.6.46 , ≤ 6.6.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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