block: initialize integrity buffer to zero before writing it to media (Linux Linux)

CVE-2024-43854
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.23 % · centile 14 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: block: initialize integrity buffer to zero before writing it to media Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn't used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory. Fix this by adding the __GFP_ZERO flag to allocations for writes.

Faiblesses (CWE)

  • CWE-401 — Mémoire non libérée après sa durée de vie utile

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 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b < 9f4af4cf08f9a0329ade3d938f55d2220c40d0a6 ; affected 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b < 129f95948a96105c1fad8e612c9097763e88ac5f ; affected 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b < 3fd11fe4f20756b4c0847f755a64cd96f8c6a005 ; affected 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b < cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2 ; affected 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b < d418313bd8f55c079a7da12651951b489a638ac1 ; affected 7ba1ba12eeef0aa7113beb16410ef8b7c748e18b < 23a19655fb56f241e592041156dfb1c6d04da644
Linux · Linuxaffected 2.6.27 ; unaffected 0 < 2.6.27 ; unaffected 4.19.322 ≤ 4.19.* ; unaffected 5.4.284 ≤ 5.4.* ; unaffected 5.10.226 ≤ 5.10.* ; unaffected 5.15.165 ≤ 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