wifi: rtl818x: rtl8187: Fix potential buffer underflow in rtl8187_rx_cb() (Linux Linux)

CVE-2025-68362
Non disponible

En bref

Source
NVD
EPSS
EPSS 0.21 % · centile 12 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: rtl8187: Fix potential buffer underflow in rtl8187_rx_cb() The rtl8187_rx_cb() calculates the rx descriptor header address by subtracting its size from the skb tail pointer. However, it does not validate if the received packet (skb->len from urb->actual_length) is large enough to contain this header. If a truncated packet is received, this will lead to a buffer underflow, reading memory before the start of the skb data area, and causing a kernel panic. Add length checks for both rtl8187 and rtl8187b descriptor headers before attempting to access them, dropping the packet cleanly if the check fails.

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 6f7853f3cbe457067e9fe05461f56c7ea4ac488c < 118e12bf3e4288cf845cd3759bd9d4c99f91aab5 ; affected 6f7853f3cbe457067e9fe05461f56c7ea4ac488c < 6a96bd0d94305fd04a6ac64446ec113bae289384 ; affected 6f7853f3cbe457067e9fe05461f56c7ea4ac488c < e2f3ea15e804607e0a4a34a2f6c331c8750b68bc ; affected 6f7853f3cbe457067e9fe05461f56c7ea4ac488c < dc153401fb26c1640a2b279c47b65e1c416af276 ; affected 6f7853f3cbe457067e9fe05461f56c7ea4ac488c < 4758770a673c60d8f615809304d72e1432fa6355 ; affected 6f7853f3cbe457067e9fe05461f56c7ea4ac488c < 638d4148e166d114a4cd7becaae992ce1a815ed8
Linux · Linuxaffected 2.6.27 ; unaffected 0 < 2.6.27 ; 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