CVE-2026-68143

net: slip: serialize receive against buffer reallocation

HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.11 % · centile 1 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Received

Description

In the Linux kernel, the following vulnerability has been resolved: net: slip: serialize receive against buffer reallocation sl_realloc_bufs() replaces rbuff and updates buffsize while holding sl->lock. slip_receive_buf() reads those fields and writes through rbuff without holding the lock. An MTU change can therefore race with receive processing. An MTU shrink can expose the new smaller rbuff with the old larger bound, causing an out-of-bounds write. A receive callback which already loaded the old rbuff can instead continue writing after that buffer has been freed. Serialize receive processing with sl_realloc_bufs() by holding sl->lock while consuming each receive batch.

Faiblesses (CWE)

  • CWE-362 — Situation de compétition

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8180daf2b66155f84ec4f9e3f95488c8a3421716 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 189a550eb7e1dc10018718ddfc46d003ffe58653 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1be09d175b627fad7f6bec7ad27b8a4a99863912 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eb3836eab47487823f362e6985e170a1e15f20fd ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 44401f7dd9940ced7098930ef64f5a332f279fc2 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5d07b178bef511d69558cfc89fe1129258dc39f8
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 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