fs: ntfs3: check return value of indx_find to avoid infinite loop (Linux Linux)

CVE-2025-71266
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: check return value of indx_find to avoid infinite loop We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed dentry in the ntfs3 filesystem can cause the kernel to hang during the lookup operations. By setting the HAS_SUB_NODE flag in an INDEX_ENTRY within a directory's INDEX_ALLOCATION block and manipulating the VCN pointer, an attacker can cause the indx_find() function to repeatedly read the same block, allocating 4 KB of memory each time. The kernel lacks VCN loop detection and depth limits, causing memory exhaustion and an OOM crash. This patch adds a return value check for fnd_push() to prevent a memory exhaustion vulnerability caused by infinite loops. When the index exceeds the size of the fnd->nodes array, fnd_push() returns -EINVAL. The indx_find() function checks this return value and stops processing, preventing further memory allocation.

Faiblesses (CWE)

  • CWE-835 — Boucle dont la condition de sortie est inatteignable (boucle infinie)

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 82cae269cfa953032fbb8980a7d554d60fb00b17 < 14c3188afbedfd5178bbabb8002487ea14b37b56 ; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 < 435d34719db0e130f6f0c621d67ed524cc1a7d10 ; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 < 68e32694be231c1cdb99b7637a657314e88e1a96 ; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 < 398e768d1accd1f5645492ab996005d7aa84a5b0 ; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 < b0ea441f44ce64fa514a415d4a9e6e2b06e7946c ; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 < 0ad7a1be44479503dbe5c699759861ef5b8bd70c
Linux · Linuxaffected 5.15 ; unaffected 0 < 5.15 ; unaffected 5.15.202 ≤ 5.15.* ; unaffected 6.1.165 ≤ 6.1.* ; unaffected 6.6.128 ≤ 6.6.* ; unaffected 6.12.75 ≤ 6.12.*

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