CVE-2026-46104
Description
AI Translation Available
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.
https://git.kernel.org/stable/c/032e70aff025d7c519af9ab791cd084380619263
https://git.kernel.org/stable/c/7eca71f57f194c1638ebb7f4097d6be8fd04c101
https://git.kernel.org/stable/c/d350fef4bc2467fe1bce15f7a20fe60e01ce41ad