CVE-2026-46104

Description

In the Linux kernel, the following vulnerability has been resolved: selinux: use sk blob accessor in socket permission helpers SELinux socket state lives in the composite LSM socket blob. sock_has_perm() and nlmsg_sock_has_extended_perms() currently dereference sk->sk_security directly, which assumes the SELinux socket blob is at offset zero. In stacked configurations that assumption does not hold. If another LSM allocates socket blob storage before SELinux, these helpers may read the wrong blob and feed invalid SID and class values into AVC checks. Use selinux_sock() instead of accessing sk->sk_security directly.

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Produits concernés

• Linux
• Linux linux kernel

Scores CVSS

Références

• https://git.kernel.org/stable/c/032e70aff025d7c519af9ab791cd084380619263 Patch
• https://git.kernel.org/stable/c/7eca71f57f194c1638ebb7f4097d6be8fd04c101 Patch
• https://git.kernel.org/stable/c/d350fef4bc2467fe1bce15f7a20fe60e01ce41ad Patch

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories