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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/14f2c14ae86c4af17a0a9f8ab46dacf2d5fd1d8a Patch
- git.kernel.org/stable/c/237557b8a81ab948e8332f7c0058e758f081c0a3 Patch
- git.kernel.org/stable/c/31527d80234caf83dc96ad478645e57df9de4472 Patch
- git.kernel.org/stable/c/48fa96538bd2868034d33429e4565fda384d0736 Patch
- git.kernel.org/stable/c/57b285e0368290aa55f79ba11419b96d0ebdb418 Patch
- git.kernel.org/stable/c/708f6926f61f71e09b5e9fd668b9882ccd46e69f Patch
- git.kernel.org/stable/c/c5e125c828b701afaf7493b42a14aa89362ff36d Patch
- git.kernel.org/stable/c/ccadd32cc1263802a5969c9efe0e96225450428c Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 14 November 2026
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