What is CVE-2026-52930?

CVE-2026-52930 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.1 onward and patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-52930 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-52930?

CVE-2026-52930 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-2026-52930?

Yes, CVE-2026-52930 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 3.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-52930 actively exploited?

CVE-2026-52930 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-52930

Medium

In the Linux kernel, the following vulnerability has been resolved: ipc/shm: serialize orphan cleanup with shm_nattch updates shm_destroy_orphaned() walks the shm idr under shm_ids(ns).rwsem, but that does not serialize all fields tested by shm_may_destroy(). In particular, shm_nattch is updated while holding shm_perm.lock, and attach paths can do that without holding the rwsem. Do not decide that an orphaned segment is unused before taking the object lock. Move the shm_may_destroy() check under shm_perm.lock, matching the other destroy paths, and unlock the segment when it no longer qualifies for removal.

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 3.1 and later are affected. Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.94, 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 3.1

Fixed in

✓ 5.10.259 5.10.x ✓ 5.15.210 5.15.x ✓ 6.1.176 6.1.x ✓ 6.6.143 6.6.x ✓ 6.12.94 6.12.x ✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/030bbc857bd51d4b25a90d931d3f8775ef22823a

Patch
Kernel Git
https://git.kernel.org/stable/c/1f0d01e35dbb228084d5187212e32c91a30dcbeb

Patch
Kernel Git
https://git.kernel.org/stable/c/2e5c6f4fd4001562781e99bbfc7f1f0127187542

Patch
Kernel Git
https://git.kernel.org/stable/c/6560be3f6a5bb84f006f184f0c966747bb58e1a3

Patch
Kernel Git
https://git.kernel.org/stable/c/92cda2593cf2ed25b0e9d78e5e6d8303bba1a064

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-52930

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-2026-52930?

CVE-2026-52930 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.1 onward and has been patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-52930 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-52930?

CVE-2026-52930 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-2026-52930?

Yes. CVE-2026-52930 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 3.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-52930 actively exploited?

No. CVE-2026-52930 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.