fs/ntfs3: Fix an NULL dereference bug (Linux Linux)

CVE-2023-52631
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.22 % · centile 13 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix an NULL dereference bug The issue here is when this is called from ntfs_load_attr_list(). The "size" comes from le32_to_cpu(attr->res.data_size) so it can't overflow on a 64bit systems but on 32bit systems the "+ 1023" can overflow and the result is zero. This means that the kmalloc will succeed by returning the ZERO_SIZE_PTR and then the memcpy() will crash with an Oops on the next line.

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 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected be71b5cba2e6485e8959da7a9f9a44461a1bb074 < ae4acad41b0f93f1c26cc0fc9135bb79d8282d0b ; affected be71b5cba2e6485e8959da7a9f9a44461a1bb074 < ec1bedd797588fe38fc11cba26d77bb1d9b194c6 ; affected be71b5cba2e6485e8959da7a9f9a44461a1bb074 < fb7bcd1722bc9bc55160378f5f99c01198fd14a7 ; affected be71b5cba2e6485e8959da7a9f9a44461a1bb074 < 686820fe141ea0220fc6fdfc7e5694f915cf64b2 ; affected be71b5cba2e6485e8959da7a9f9a44461a1bb074 < b2dd7b953c25ffd5912dda17e980e7168bebcf6c
Linux · Linuxaffected 5.15 ; unaffected 0 < 5.15 ; unaffected 5.15.149 ≤ 5.15.* ; unaffected 6.1.78 ≤ 6.1.* ; unaffected 6.6.17 ≤ 6.6.* ; unaffected 6.7.5 ≤ 6.7.*

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