Riskcovery

CVE-2026-46104

selinux: use sk blob accessor in socket permission helpers

State
Published
Severity
Not scored
Published
May 28, 2026
Updated
Jun 14, 2026
Reserved
May 13, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • d1d991efaf34606d500dcbd28bedc0666eeec8e2 to before d350fef4bc2467fe1bce15f7a20fe60e01ce41adAffected
  • d1d991efaf34606d500dcbd28bedc0666eeec8e2 to before 7eca71f57f194c1638ebb7f4097d6be8fd04c101Affected
  • d1d991efaf34606d500dcbd28bedc0666eeec8e2 to before 032e70aff025d7c519af9ab791cd084380619263Affected
LinuxLinux
  • 6.13Affected
  • before 6.13Not affected
  • 6.18.30 through 6.18.*Not affected
  • 7.0.7 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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