nilfs2: protect access to buffers with no active references (Linux Linux)

CVE-2025-21811
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.26 % · centile 17 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect access to buffers with no active references nilfs_lookup_dirty_data_buffers(), which iterates through the buffers attached to dirty data folios/pages, accesses the attached buffers without locking the folios/pages. For data cache, nilfs_clear_folio_dirty() may be called asynchronously when the file system degenerates to read only, so nilfs_lookup_dirty_data_buffers() still has the potential to cause use after free issues when buffers lose the protection of their dirty state midway due to this asynchronous clearing and are unintentionally freed by try_to_free_buffers(). Eliminate this race issue by adjusting the lock section in this function.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
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:HCISA-ADP
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 8c26c4e2694a163d525976e804d81cd955bbb40c < e1fc4a90a90ea8514246c45435662531975937d9 ; affected 8c26c4e2694a163d525976e804d81cd955bbb40c < 72cf688d0ce7e642b12ddc9b2a42524737ec1b4a ; affected 8c26c4e2694a163d525976e804d81cd955bbb40c < d8ff250e085a4c4cdda4ad1cdd234ed110393143 ; affected 8c26c4e2694a163d525976e804d81cd955bbb40c < 58c27fa7a610b6e8d44e6220e7dbddfbaccaf439 ; affected 8c26c4e2694a163d525976e804d81cd955bbb40c < 8e1b9201c9a24638cf09c6e1c9f224157328010b ; affected 8c26c4e2694a163d525976e804d81cd955bbb40c < 4b08d23d7d1917bef4fbee8ad81372f49b006656
Linux · Linuxaffected 3.10 ; unaffected 0 < 3.10 ; unaffected 5.4.291 ≤ 5.4.* ; unaffected 5.10.235 ≤ 5.10.* ; unaffected 5.15.179 ≤ 5.15.* ; unaffected 6.1.129 ≤ 6.1.*

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