CVE-2026-46057

LOW EPSS 2.0%
Published May 27, 20261mo ago · Modified Jun 17, 20261w ago
3.3 CVSS 3.1
Low
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
3.3
Exploitability
1.8
Impact
1.4
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
2.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥6.15  –  <6.18.27
linuxlinux_kernel*≥6.19  –  <7.0.4

References 3

  • git.kernel.org https://git.kernel.org/stable/c/1c513b8a00df13d231021e74ad92babb3fedf64a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2fcde49092aac55d5beef43fdd3633217672f7d1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/874c8f83826c95c62c21d9edfe9ef43e5c346724
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1c513b8a00df13d231021e74ad92babb3fedf64a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2fcde49092aac55d5beef43fdd3633217672f7d1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/874c8f83826c95c62c21d9edfe9ef43e5c346724
    Patch