SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf (Linux Linux)

CVE-2025-71120
HIGH 7.5

En bref

Source
NVD
EPSS
EPSS 0.53 % · centile 45 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf A zero length gss_token results in pages == 0 and in_token->pages[0] is NULL. The code unconditionally evaluates page_address(in_token->pages[0]) for the initial memcpy, which can dereference NULL even when the copy length is 0. Guard the first memcpy so it only runs when length > 0.

Faiblesses (CWE)

  • CWE-476 — Déréférencement de pointeur nul

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HLinux
CVSS 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
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 5866efa8cbfbadf3905072798e96652faf02dbe8 < a8f1e445ce3545c90d69c9e8ff8f7821825fe810 ; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 < 4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d ; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 < f9e53f69ac3bc4ef568b08d3542edac02e83fefd ; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 < 7452d53f293379e2c38cfa8ad0694aa46fc4788b ; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 < a2c6f25ab98b423f99ccd94874d655b8bcb01a19 ; affected 5866efa8cbfbadf3905072798e96652faf02dbe8 < 1c8bb965e9b0559ff0f5690615a527c30f651dd8
Linux · Linuxaffected 5.5 ; unaffected 0 < 5.5 ; unaffected 5.10.248 ≤ 5.10.* ; unaffected 5.15.198 ≤ 5.15.* ; unaffected 6.1.160 ≤ 6.1.* ; unaffected 6.6.120 ≤ 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