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CVE-2025-22124

md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb

HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 10 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb In clustermd, separate write-intent-bitmaps are used for each cluster node: 0 4k 8k 12k ------------------------------------------------------------------- | idle | md super | bm super [0] + bits | | bm bits[0, contd] | bm super[1] + bits | bm bits[1, contd] | | bm super[2] + bits | bm bits [2, contd] | bm super[3] + bits | | bm bits [3, contd] | | | So in node 1, pg_index in __write_sb_page() could equal to bitmap->storage.file_pages. Then bitmap_limit will be calculated to 0. md_super_write() will be called with 0 size. That means the first 4k sb area of node 1 will never be updated through filemap_write_page(). This bug causes hang of mdadm/clustermd_tests/01r1_Grow_resize. Here use (pg_index % bitmap->storage.file_pages) to make calculation of bitmap_limit correct.

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 655cc01889fa9b65441922565cddee64af49e6d6 < 5eaf57fdfa37c869e61e9908e03edd707f9145b8 ; affected ab99a87542f194f28e2364a42afbf9fb48b1c724 < 60196f92bbc7901eb5cfa5d456651b87ea50a4a3 ; affected ab99a87542f194f28e2364a42afbf9fb48b1c724 < bc3a9788961631359527763d7e1fcf26554c7cb1 ; affected ab99a87542f194f28e2364a42afbf9fb48b1c724 < 6130825f34d41718c98a9b1504a79a23e379701e ; affected 5600d6013c634c2b6b6c6c55c8ecb50c3a6211f2 ; affected 6.6.44 < 6.6.157
Linux · Linuxaffected 6.11 ; unaffected 0 < 6.11 ; unaffected 6.6.157 ≤ 6.6.* ; unaffected 6.12.46 ≤ 6.12.* ; unaffected 6.14.2 ≤ 6.14.* ; unaffected 6.15 ≤ *

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