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

Summary

CVE	CVE-2024-39472
State	PUBLISHED
Assigner	Linux
Source Priority	CVE Program / NVD first with legacy fallback
Published	2024-07-05 07:15:10 UTC
Updated	2026-08-04 11:18:57 UTC
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.

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.002510000 probability, percentile 0.165400000 (date 2026-08-06)

Problem Types: CWE-770

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Primary	5.5	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`
3.1	416baaa9-dc9f-4396-8d5f-8c081fb06d67	Secondary	7.3	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H`
3.1	CNA	DECLARED	7.3	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:H`

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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

Type	Vendor	Product	Version	Update	Edition	Language
Operating System	Linux	Linux Kernel	All	All	All	All

Source	Vendor	Product	Version	Platforms
CNA	Linux	Linux	affected 0c771b99d6c9a0552fea5cc43669b726dad8f659 f754591b17d0ee91c2b45fe9509d0cdc420527cb git	Not specified
CNA	Linux	Linux	affected 0c771b99d6c9a0552fea5cc43669b726dad8f659 57835c0e7152e36b03875dd6c56dfeed685c1b1f git	Not specified
CNA	Linux	Linux	affected 0c771b99d6c9a0552fea5cc43669b726dad8f659 c2389c074973aa94e34992e7f66dac0de37595b5 git	Not specified
CNA	Linux	Linux	affected 0c771b99d6c9a0552fea5cc43669b726dad8f659 45cf976008ddef4a9c9a30310c9b4fb2a9a6602a git	Not specified
CNA	Linux	Linux	affected 5.10	Not specified
CNA	Linux	Linux	unaffected 5.10 semver	Not specified
CNA	Linux	Linux	unaffected 5.15.165 5.15.* semver	Not specified
CNA	Linux	Linux	unaffected 6.1.105 6.1.* semver	Not specified
CNA	Linux	Linux	unaffected 6.6.46 6.6.* semver	Not specified
CNA	Linux	Linux	unaffected 6.10 * original_commit_for_fix	Not specified

Reference	Source	Link	Tags
git.kernel.org/stable/c/f754591b17d0ee91c2b45fe9509d0cdc420527cb	416baaa9-dc9f-4396-8d5f-8c081fb06d67	git.kernel.org
git.kernel.org/stable/c/c2389c074973aa94e34992e7f66dac0de37595b5	416baaa9-dc9f-4396-8d5f-8c081fb06d67	git.kernel.org
git.kernel.org/stable/c/45cf976008ddef4a9c9a30310c9b4fb2a9a6602a	af854a3a-2127-422b-91ae-364da2661108	git.kernel.org	Mailing List, Patch
git.kernel.org/stable/c/57835c0e7152e36b03875dd6c56dfeed685c1b1f	416baaa9-dc9f-4396-8d5f-8c081fb06d67	git.kernel.org
lists.debian.org/debian-lts-announce/2025/01/msg00001.html	af854a3a-2127-422b-91ae-364da2661108	lists.debian.org
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

There are currently no legacy QID mappings associated with this CVE.