CVE-2025-38396

In the Linux kernel, the following vulnerability has been resolved: fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass Export anon_inode_make_secure_inode() to allow KVM guest_memfd to create anonymous inodes with proper security context. This replaces the current pattern of calling alloc_anon_inode() followed by inode_init_security_anon() for creating security context manually. This change also fixes a security regression in secretmem where the S_PRIVATE flag was not cleared after alloc_anon_inode(), causing LSM/SELinux checks to be bypassed for secretmem file descriptors. As guest_memfd currently resides in the KVM module, we need to export this symbol for use outside the core kernel. In the future, guest_memfd might be moved to core-mm, at which point the symbols no longer would have to be exported. When/if that happens is still unclear.

• linux linux kernel (>= 6.0 < 6.1.146) • linux linux kernel (>= 6.2 < 6.6.97) • linux linux kernel (>= 6.7 < 6.12.37) • linux linux kernel (>= 6.13 < 6.15.6) • linux linux kernel 6.16 • debian debian linux 11.0