CVE-2026-64596

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the libfs component where the init pseudo() function fails to set SB I NOEXEC and SB I NODEV flags by default. This causes the path noexec() function to trigger a warning when an anonymous-inode file, such as those used by dma-buf, is mapped via mmap on kernels compiled with CONFIG DEBUG VFS=y. The fix involves updating init pseudo() to ensure all pseudo filesystems have these flags set by default, preventing executable mappings of pseudo-fs file descriptors, which now correctly fail with an -EPERM error.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.