What is CVE-2026-46168?

CVE-2026-46168 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.14 onward and patched in 5.15.209, 6.1.175, 6.6.140 and others. CVE-2026-46168 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46168?

CVE-2026-46168 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-2026-46168?

Yes, CVE-2026-46168 has been patched. Fixed versions include 5.15.209, 6.1.175, 6.6.140 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46168 actively exploited?

CVE-2026-46168 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46168

Medium

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic context) around sock_set_timestamp() and sock_set_timestamping() is unsafe, as both helpers can sleep. Replace lock_sock_fast() with sleepable lock_sock()/release_sock() to avoid scheduling while atomic panic.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-10

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 5.14 and later are affected. Fixed in 5.15.209, 6.1.175, 6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 5.14

Fixed in

✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.140 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/0949d8bbbedbafe0136a1723c41eb823c2f1e09d

Patch
Kernel Git
https://git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210d

Patch
Kernel Git
https://git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfc

Patch
Kernel Git
https://git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5b

Patch
Kernel Git
https://git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2026-46168

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-10

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46168?

CVE-2026-46168 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.14 onward and has been patched in 5.15.209, 6.1.175, 6.6.140 and others. CVE-2026-46168 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46168?

CVE-2026-46168 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-2026-46168?

Yes. CVE-2026-46168 has been patched. Fixed versions include 5.15.209, 6.1.175, 6.6.140 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46168 actively exploited?

No. CVE-2026-46168 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.