What is CVE-2026-52928?

CVE-2026-52928 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.15 onward and patched in 5.15.211, 6.1.177, 6.6.144 and others. CVE-2026-52928 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-52928?

CVE-2026-52928 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-2026-52928?

Yes, CVE-2026-52928 has been patched. Fixed versions include 5.15.211, 6.1.177, 6.6.144 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-52928 actively exploited?

CVE-2026-52928 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-52928

Medium

In the Linux kernel, the following vulnerability has been resolved: af_unix: Reject SIOCATMARK on non-stream sockets SIOCATMARK reports whether the receive queue is at the urgent mark for MSG_OOB. In AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets. SOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(), so they should not support SIOCATMARK either. Return -EOPNOTSUPP for non-stream sockets before checking the receive queue.

Package Linux Kernel

Published 2026-06-24

Last modified 2026-07-08

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 5.15 and later are affected. Fixed in 5.15.211, 6.1.177, 6.6.144, 6.12.88, 6.18.30, 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.211 5.15.x ✓ 6.1.177 6.1.x ✓ 6.6.144 6.6.x ✓ 6.12.88 6.12.x ✓ 6.18.30 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1

References

7 total

Kernel Git
https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a

Patch
Kernel Git
https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6

Patch
Kernel Git
https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b

Patch
Kernel Git
https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729

Patch
Kernel Git
https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2026-52928

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-24

Modified 2026-07-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-52928?

CVE-2026-52928 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.211, 6.1.177, 6.6.144 and others. CVE-2026-52928 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-52928?

CVE-2026-52928 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-2026-52928?

Yes. CVE-2026-52928 has been patched. Fixed versions include 5.15.211, 6.1.177, 6.6.144 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-52928 actively exploited?

No. CVE-2026-52928 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.