btrfs: clean up our handling of refs == 0 in snapshot delete (Linux Linux)

CVE-2024-46840
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.26 % · centile 18 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: clean up our handling of refs == 0 in snapshot delete In reada we BUG_ON(refs == 0), which could be unkind since we aren't holding a lock on the extent leaf and thus could get a transient incorrect answer. In walk_down_proc we also BUG_ON(refs == 0), which could happen if we have extent tree corruption. Change that to return -EUCLEAN. In do_walk_down() we catch this case and handle it correctly, however we return -EIO, which -EUCLEAN is a more appropriate error code. Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert that to proper error handling. Also adjust the error message so we can actually do something with the information.

Références

Scores

VersionScoreVecteurÉvalué par
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)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 2c47e605a91dde6b0514f689645e7ab336c8592a < c847b28a799733b04574060ab9d00f215970627d ; affected 2c47e605a91dde6b0514f689645e7ab336c8592a < 71291aa7246645ef622621934d2067400380645e ; affected 2c47e605a91dde6b0514f689645e7ab336c8592a < c60676b81fab456b672796830f6d8057058f029c ; affected 2c47e605a91dde6b0514f689645e7ab336c8592a < 728d4d045b628e006b48a448f3326a7194c88d32 ; affected 2c47e605a91dde6b0514f689645e7ab336c8592a < 9cc887ac24b7a0598f4042ae9af6b9a33072f75b ; affected 2c47e605a91dde6b0514f689645e7ab336c8592a < 7d1df13bf078ffebfedd361d714ff6cee1ff01b9
Linux · Linuxaffected 2.6.31 ; unaffected 0 < 2.6.31 ; unaffected 4.19.322 ≤ 4.19.* ; unaffected 5.4.284 ≤ 5.4.* ; unaffected 5.10.226 ≤ 5.10.* ; unaffected 5.15.167 ≤ 5.15.*

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