ext4: regenerate buddy after block freeing failed if under fc replay (Linux Linux)

CVE-2024-26601
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.29 % · percentile 22 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 0983142c5f17a62055ec851372273c3bc77e4788 < 94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a ; affected 6bd97bf273bdb4944904e57480f6545bca48ad77 < c1317822e2de80e78f137d3a2d99febab1b80326 ; affected 6bd97bf273bdb4944904e57480f6545bca48ad77 < 78327acd4cdc4a1601af718b781eece577b6b7d4 ; affected 6bd97bf273bdb4944904e57480f6545bca48ad77 < ea42d6cffb0dd27a417f410b9d0011e9859328cb ; affected 6bd97bf273bdb4944904e57480f6545bca48ad77 < 6b0d48647935e4b8c7b75d1eccb9043fcd4ee581 ; affected 6bd97bf273bdb4944904e57480f6545bca48ad77 < c9b528c35795b711331ed36dc3dbee90d5812d4e
Linux · Linuxaffected 5.11 ; unaffected 0 < 5.11 ; unaffected 5.10.211 ≤ 5.10.* ; unaffected 5.15.150 ≤ 5.15.* ; unaffected 6.1.78 ≤ 6.1.* ; unaffected 6.6.17 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD