What is CVE-2026-46104?

CVE-2026-46104 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.13 onward and patched in 6.18.30, 7.0.7 and 7.1. CVE-2026-46104 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46104?

CVE-2026-46104 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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. 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?

CVE-2026-46104 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46104

Medium

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 2026-06-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 6.13 and later are affected. Fixed in 6.18.30, 7.0.7, 7.1 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

References

3 total

Kernel Git
https://git.kernel.org/stable/c/032e70aff025d7c519af9ab791cd084380619263

Patch
Kernel Git
https://git.kernel.org/stable/c/7eca71f57f194c1638ebb7f4097d6be8fd04c101

Patch
Kernel Git
https://git.kernel.org/stable/c/d350fef4bc2467fe1bce15f7a20fe60e01ce41ad

Patch

Details

CVE ID CVE-2026-46104

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46104?

CVE-2026-46104 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.13 onward and has been patched in 6.18.30, 7.0.7 and 7.1. CVE-2026-46104 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46104?

CVE-2026-46104 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
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. 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.