In the Linux kernel, the following vulnerability has been resolved:
drm/panthor: Restrict high priorities on group_create
We were allowing any users to create a high priority group without any permission checks. As a result, this was allowing possible denial of service.
We now only allow the DRM master or users with the CAP_SYS_NICE capability to set higher priorities than PANTHOR_GROUP_PRIORITY_MEDIUM.
As the sole user of that uAPI lives in Mesa and hardcode a value of MEDIUM [1], this should be safe to do.
Additionally, as those checks are performed at the ioctl level, panthor_group_create now only check for priority level validity.
[1]https://gitlab.freedesktop.org/mesa/mesa/-/blob/f390835074bdf162a63deb0311d1a6de527f9f89/src/gallium/drivers/panfrost/pan_csf.c#L1038
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Suse | — | Upgrade kernel-obs-buildUpgrade kernel-defaultUpgrade reiserfs-kmp-defaultUpgrade kernel-develUpgrade kernel-sourceUpgrade kernel-docsUpgrade kernel-macrosUpgrade kernel-64kbUpgrade kernel-symsUpgrade kernel-default-develUpgrade kernel-zfcpdumpUpgrade kernel-64kb-devel | Dec 5, 2025 | Dec 5, 2025 |
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