CVE-2024-26772

ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal()

HIGH
7.8
CVSS Score
Published: April 3, 2024 at 05:00 PM UTC
Updated: October 15, 2026 at 01:17 AM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal() Places the logic for checking if the group's block bitmap is corrupt under the protection of the group lock to avoid allocating blocks from the group with a corrupted block bitmap.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.19.3084.20 ≤ v < 5.4.2705.11 ≤ v < 5.15.1505.16 ≤ v < 6.1.805.5 ≤ v < 5.10.2116.2 ≤ v < 6.6.196.7 ≤ v < 6.7.7163a203ddb36c36d4a1c942aececda0cc8d06aa76.86.8 rc16.8 rc2
Vendor states this is fixed in 21dbe20589c7f48e9c5d336ce6402bcebfa6d76a (fixed)
Vendor states this is fixed in 5a6dcc4ad0f7f7fa8e8d127b5526e7c5f2d38a43 (fixed)
Vendor states this is fixed in 6b92b1bc16d691c95b152c6dbf027ad64315668d (fixed)
Vendor states this is fixed in 832698373a25950942c04a512daa652c18a9b513 (fixed)
Vendor states this is fixed in 8de8305a25bfda607fc13475ebe84b978c96d7ff (fixed)
Vendor states this is fixed in d3bbe77a76bc52e9d4d0a120f1509be36e25c916 (fixed)
Vendor states this is fixed in d639102f4cbd4cb65d1225dba3b9265596aab586 (fixed)
Vendor states this is fixed in ffeb72a80a82aba59a6774b0611f792e0ed3b0b7 (fixed)
Vendor states this is fixed in 3.12 (unaffected)
Vendor states this is fixed in 4.19.308 (unaffected)
Vendor states this is fixed in 5.10.211 (unaffected)
Vendor states this is fixed in 5.15.150 (unaffected)
Vendor states this is fixed in 5.4.270 (unaffected)
Vendor states this is fixed in 6.1.80 (unaffected)
Vendor states this is fixed in 6.6.19 (unaffected)
Vendor states this is fixed in 6.7.7 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)

References (12)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/21dbe20589c7f48e9c5d336ce6402bcebfa6d76a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/5a6dcc4ad0f7f7fa8e8d127b5526e7c5f2d38a43
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6b92b1bc16d691c95b152c6dbf027ad64315668d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/832698373a25950942c04a512daa652c18a9b513
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8de8305a25bfda607fc13475ebe84b978c96d7ff
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d3bbe77a76bc52e9d4d0a120f1509be36e25c916
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d639102f4cbd4cb65d1225dba3b9265596aab586
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ffeb72a80a82aba59a6774b0611f792e0ed3b0b7

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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