staging: rtl8723bs: fix OOB write in HT_caps_handler() (Linux Linux)

CVE-2026-64440
HIGH 8.1

En bref

Source
NVD
EPSS
EPSS 0.27 % · centile 19 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB write in HT_caps_handler() HT_caps_handler() iterates pIE->length bytes and writes into HT_caps.u.HT_cap[], which is a fixed 26-byte array (sizeof struct HT_caps_element). Because pIE->length is a raw u8 from an over-the-air 802.11 AssocResponse frame and is never validated, a malicious AP can set it up to 255, causing up to 229 bytes of out-of-bounds writes into adjacent fields of struct mlme_ext_info. Truncate the iteration count to the size of HT_caps.u.HT_cap using umin() so that data from a longer-than-expected IE is silently ignored rather than written out of bounds, preserving interoperability with APs that pad the element. An early return on oversized IEs was considered but rejected: it would bypass the pmlmeinfo->HT_caps_enable = 1 assignment that precedes the loop, silently disabling HT mode for APs that append extra bytes to the HT Capabilities IE.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HLinux
CVSS 3.1HIGH 8.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/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 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 37f642d47c3648a707df3ceb092eee1adffbfd28 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 8c872b47c7fc32e95e0da1db7512388794adcd69 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < bb3b942da4123b55d1cacf19d1a7d5ba15dbf83a ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 918537a0fbed85aab61fa28ad75e6279070610c9 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6f91621fc45025ad3c0be796b70e6e4cee22fc69 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 225b6d3fc7e99ac3d20b6c861d1e47d24e7ea31d
Linux · Linuxaffected 4.12 ; unaffected 0 < 4.12 ; unaffected 5.15.212 ≤ 5.15.* ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 6.6.* ; unaffected 6.12.96 ≤ 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