CVE-2026-46104

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.

Package Linux Kernel
Published 2026-05-28
Last modified 2026-05-28
Patch available
Yes

Affected versions

Linux kernel versions 6.13 and later are affected. Fixed in 6.18.30, 7.0.7, 7.1-rc2 and their respective stable series.

Affected from
≥ 6.13
Fixed in
✓ 6.18.30 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1-rc2

References

The following references provide additional information about CVE-2026-46104 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2026-46104?

    CVE-2026-46104 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.13 onward and has been patched in 6.18.30, 7.0.7 and 7.1-rc2. CVE-2026-46104 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-46104?

    Yes — CVE-2026-46104 has been patched. Fixed versions include 6.18.30, 7.0.7 and 7.1-rc2. If you are running Linux kernel 6.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-46104 actively exploited?

    No — CVE-2026-46104 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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