CVEvulnerability
CVE-2026-97505
- Status
- Received
- Published
- 2026-09-24
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()
Currently, the __resource_resize_store() allows writing to the
resourceN_resize sysfs attribute to change a BAR's size without checking
for capabilities, currently relying only on the file access check.
Resizing a BAR modifies PCI device configuration and can disrupt active
drivers. After the upcoming conversion to static attributes, it will also
trigger resource file updates via sysfs_update_groups().
Add a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR
resize operations.
References
- https://git.kernel.org/stable/c/25ec7f57deceec633f27bc93b615f951e2ade814 git.kernel.org
- https://git.kernel.org/stable/c/b722a607f858b9cd036075ea0efad553fb98e982 git.kernel.org
- https://git.kernel.org/stable/c/cbf0628c0b7db86c5ce36451f088101546acbf1d git.kernel.org
- https://git.kernel.org/stable/c/d02dd7ce8e52b66b7d3b6eca2a7d81e7f5b10a62 git.kernel.org