batman-adv: tp_meter: avoid use of uninit sender vars (Linux Linux)

CVE-2026-52931
CRITICAL 9.8

En bref

Source
NVD
EPSS
EPSS 0.50 % · centile 43 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tp_meter: avoid use of uninit sender vars batadv_tp_recv_ack() and batadv_tp_stop() are only valid for tp_vars in the BATADV_TP_SENDER role. When called with a BATADV_TP_RECEIVER role, it proceeds to read sender-only members that were never initialized, leading to undefined behavior. This can be triggered when a node that is currently acting as a receiver in an ongoing tp_meter session receives a malicious ACK packet. Guard against this by checking tp_vars->role immediately after the lookup and bailing out if it is not BATADV_TP_SENDER, before any of those members are accessed.

Faiblesses (CWE)

  • CWE-457 — Use of Uninitialized Variable

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 0e388af04b3958b178a1b979527f93eb46ea1fee ; affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 1a21c055f66e78973712a4a1be2a554f1ee2e4f4 ; affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 9884c9c02d3c90e9215db3c5128f59045d20ae91 ; affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 53f931e0146ae5bdab4cba302646827d06b3794b ; affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e < ecdaa3e4d91040206afe21bc8a0d1198a0971ff3 ; affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e < dc2ae5fbd2dadc26735092f140b246841d969a11
Linux · Linuxaffected 4.8 ; unaffected 0 < 4.8 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.142 ≤ 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