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CVE-2026-46033 In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests…

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject short ahash digests during instance creation authencesn requires either a zero authsize or an authsize of at least 4 bytes because the ESN encrypt/decrypt paths always move 4 bytes of high-order sequence number data at the end of the authenticated data. While crypto_authenc_esn_setauthsize() already rejects explicit non-zero authsizes in the range 1..3, crypto_authenc_esn_create() still copied auth->digestsize into inst->alg.maxauthsize without validating it. The AEAD core then initialized the tfm's default authsize from that value. As a result, selecting an ahash with digest size 1..3, such as cbcmac(cipher_null), exposed authencesn instances whose default authsize was invalid even though setauthsize() would have rejected the same value. AF_ALG could then trigger the ESN tail handling with a too-short tag and hit an out-of-bounds access. Reject authencesn instances whose ahash digest size is in the invalid non-zero range 1..3 so that no tfm can inherit an unsupported default authsize.

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 7.1 premières → < 7.1 7.1
Linux 7.0 premières → < 7.0.4 7.0.4
Linux 6.18 premières → < 6.18.27 6.18.27
Linux 6.12 premières → < 6.12.86 6.12.86
Linux 6.6 premières → < 6.6.140 6.6.140
Linux 6.1 premières → < 6.1.175 6.1.175
Linux 5.15 premières → < 5.15.209 5.15.209
Linux 5.10 premières → < 5.10.258 5.10.258
Linux 4.11 Pas de correctif indiqué
Afficher les 9 autres branches
Produit Versions touchées Corrigé en
Red Hat Enterprise Linux 10 Versions non publiées
Red Hat Enterprise Linux 8 Versions non publiées
Red Hat Enterprise Linux 9 Versions non publiées
Red Hat Enterprise Linux 6 Versions non publiées
Red Hat Enterprise Linux 7 Versions non publiées
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → dernières Pas de correctif indiqué
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.7 → dernières Pas de correctif indiqué
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → dernières Pas de correctif indiqué
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification

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