block: fix potential invalid pointer dereference in blk_add_partition (Linux Linux)

CVE-2024-47705
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.22 % · centile 12 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls.

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:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected b72053072c0bbe9f1cdfe2ffa3c201c185da2201 < 4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f ; affected b72053072c0bbe9f1cdfe2ffa3c201c185da2201 < cc4d21d9492db4e534d3e01253cf885c90dd2a8b ; affected b72053072c0bbe9f1cdfe2ffa3c201c185da2201 < 64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed ; affected b72053072c0bbe9f1cdfe2ffa3c201c185da2201 < 80f5bfbb80ea1615290dbc24f49d3d8c86db58fe ; affected b72053072c0bbe9f1cdfe2ffa3c201c185da2201 < 652039ba477c9a4ab43740cf2cb0d068d53508c2 ; affected b72053072c0bbe9f1cdfe2ffa3c201c185da2201 < afe53ea9b378c376101d99d216f13b6256f75189
Linux · Linuxaffected 5.5 ; unaffected 0 < 5.5 ; unaffected 5.10.227 ≤ 5.10.* ; unaffected 5.15.168 ≤ 5.15.* ; unaffected 6.1.113 ≤ 6.1.* ; unaffected 6.6.54 ≤ 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