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.
How to fix
- linux linux_kernel5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11 or later
- git.kernel.org/stable/c/14f2c14ae86c4af17a0a9f8ab46dacf2d5fd1d8a
- git.kernel.org/stable/c/237557b8a81ab948e8332f7c0058e758f081c0a3
- git.kernel.org/stable/c/31527d80234caf83dc96ad478645e57df9de4472
- git.kernel.org/stable/c/48fa96538bd2868034d33429e4565fda384d0736
- git.kernel.org/stable/c/57b285e0368290aa55f79ba11419b96d0ebdb418
- git.kernel.org/stable/c/708f6926f61f71e09b5e9fd668b9882ccd46e69f
- git.kernel.org/stable/c/c5e125c828b701afaf7493b42a14aa89362ff36d
- git.kernel.org/stable/c/ccadd32cc1263802a5969c9efe0e96225450428c
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.19 ≤ v < 5.10.258, 5.11 ≤ v < 5.15.209, 5.16 ≤ v < 6.1.175, 6.2 ≤ v < 6.6.142, 6.7 ≤ v < 6.12.92, 6.13 ≤ v < 6.18.34, 6.19 ≤ v < 7.0.11, 7.1 | 5.10.258, 5.15.209, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11 |
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