CVE-2026-64185

Description

In the Linux kernel, the following vulnerability has been resolved: sysfs: don't remove existing directory on update failure When sysfs_update_group() is called for a named group and create_files() fails (e.g. -ENOMEM), internal_create_group() calls kernfs_remove(kn) on the group directory. In the update path, kn was obtained via kernfs_find_and_get() and refers to a directory that already existed before this call. Removing it silently destroys a sysfs group that the caller did not create. Only remove the directory if we created it ourselves. On update failure the directory remains as it is left empty by remove_files() inside create_files(), but can be repopulated by a retry.

References

• https://git.kernel.org/stable/c/14f2c14ae86c4af17a0a9f8ab46dacf2d5fd1d8a
• https://git.kernel.org/stable/c/237557b8a81ab948e8332f7c0058e758f081c0a3
• https://git.kernel.org/stable/c/31527d80234caf83dc96ad478645e57df9de4472
• https://git.kernel.org/stable/c/48fa96538bd2868034d33429e4565fda384d0736
• https://git.kernel.org/stable/c/57b285e0368290aa55f79ba11419b96d0ebdb418