bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again (Linux Linux)

CVE-2024-48881
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: bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in node allocations") leads a NULL pointer deference in cache_set_flush(). 1721 if (!IS_ERR_OR_NULL(c->root)) 1722 list_add(&c->root->list, &c->btree_cache); >From the above code in cache_set_flush(), if previous registration code fails before allocating c->root, it is possible c->root is NULL as what it is initialized. __bch_btree_node_alloc() never returns NULL but c->root is possible to be NULL at above line 1721. This patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

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:HCISA-ADP
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)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 0729029e647234fa1a94376b6edffec5c2cd75f6 < 4379c5828492a4c2a651c8f826a01453bd2b80b0 ; affected db9439cef0b5efccf8021fe89f4953e0f901e85b < 336e30f32ae7c043fde0f6fa21586ff30bea9fe2 ; affected 991e9c186a8ac6ab272a86e0ddc6f9733c38b867 < fb5fee35bdd18316a84b5f30881a24e1415e1464 ; affected 68118c339c6e1e16ae017bef160dbe28a27ae9c8 < 5202391970ffbf81975251b3526b890ba027b715 ; affected 028ddcac477b691dd9205c92f991cc15259d033e < cc05aa2c0117e20fa25a3c0d915f98b8f2e78667 ; affected 028ddcac477b691dd9205c92f991cc15259d033e < 5e0e913624bcd24f3de414475018d3023f060ee1
Linux · Linuxaffected 6.5 ; unaffected 0 < 6.5 ; unaffected 5.4.287 ≤ 5.4.* ; unaffected 5.10.231 ≤ 5.10.* ; unaffected 5.15.174 ≤ 5.15.* ; unaffected 6.1.120 ≤ 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