What is CVE-2026-46057?

CVE-2026-46057 is a Low severity Linux kernel vulnerability with a CVSS score of 3.3 out of 10, affecting Linux kernel versions from 6.15 onward and patched in 6.18.27, 7.0.4 and 7.1. CVE-2026-46057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46057?

CVE-2026-46057 has a CVSS score of 3.3 out of 10, rated Low severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Is there a patch available for CVE-2026-46057?

Yes, CVE-2026-46057 has been patched. Fixed versions include 6.18.27, 7.0.4 and 7.1. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46057 actively exploited?

CVE-2026-46057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46057

Low

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix LOG_SUBDOMAINS_OFF inheritance across fork() hook_cred_transfer() only copies the Landlock security blob when the source credential has a domain. This is inconsistent with landlock_restrict_self() which can set LOG_SUBDOMAINS_OFF on a credential without creating a domain (via the ruleset_fd=-1 path): the field is committed but not preserved across fork() because the child's prepare_creds() calls hook_cred_transfer() which skips the copy when domain is NULL. This breaks the documented use case where a process mutes subdomain logs before forking sandboxed children: the children lose the muting and their domains produce unexpected audit records. Fix this by unconditionally copying the Landlock credential blob.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-16

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

3.3

out of 10

Low

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Vector string

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

Affected versions

Linux kernel versions 6.15 and later are affected. Fixed in 6.18.27, 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 6.15

Fixed in

✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1

References

3 total

Kernel Git
https://git.kernel.org/stable/c/1c513b8a00df13d231021e74ad92babb3fedf64a

Patch
Kernel Git
https://git.kernel.org/stable/c/2fcde49092aac55d5beef43fdd3633217672f7d1

Patch
Kernel Git
https://git.kernel.org/stable/c/874c8f83826c95c62c21d9edfe9ef43e5c346724

Patch

Details

CVE ID CVE-2026-46057

Severity Low

CVSS score 3.3 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46057?

CVE-2026-46057 is a Low severity Linux kernel vulnerability with a CVSS score of 3.3 out of 10 . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.27, 7.0.4 and 7.1. CVE-2026-46057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46057?

CVE-2026-46057 has a CVSS score of 3.3 out of 10, rated Low severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
Is there a patch available for CVE-2026-46057?

Yes. CVE-2026-46057 has been patched. Fixed versions include 6.18.27, 7.0.4 and 7.1. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46057 actively exploited?

No. CVE-2026-46057 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.