CVE-2026-46057

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> landlock: Fix LOG_SUBDOMAINS_OFF inheritance across fork()<br /> <br /> hook_cred_transfer() only copies the Landlock security blob when the<br /> source credential has a domain. This is inconsistent with<br /> landlock_restrict_self() which can set LOG_SUBDOMAINS_OFF on a<br /> credential without creating a domain (via the ruleset_fd=-1 path): the<br /> field is committed but not preserved across fork() because the child&amp;#39;s<br /> prepare_creds() calls hook_cred_transfer() which skips the copy when<br /> domain is NULL.<br /> <br /> This breaks the documented use case where a process mutes subdomain logs<br /> before forking sandboxed children: the children lose the muting and<br /> their domains produce unexpected audit records.<br /> <br /> Fix this by unconditionally copying the Landlock credential blob.