In the Linux kernel, the following vulnerability has been resolved:
drm/gem: fix race between change_handle and handle_delete
drm_gem_change_handle_ioctl leaves the old handle live in the IDR during the window between spin_unlock(table_lock) and the final spin_lock(table_lock). A concurrent drm_gem_handle_delete on the old handle succeeds in this window, decrements handle_count to 0, and frees the GEM object while the new handle's IDR entry still references it.
NULL the old handle's IDR entry before dropping table_lock so that any concurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL. Restore the old entry on the prime-bookkeeping error path.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade bpftool6.18Upgrade microvm-kernel6.18Upgrade kernel6.18Upgrade kernel6.18-tools-develUpgrade perf6.18Upgrade kernel6.18-modules-extra-commonUpgrade python3-perf6.18Upgrade kernel6.18-develUpgrade kernel6.18-toolsUpgrade kernel-livepatch-6.18.35-68.127Upgrade kernel6.18-headersUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-debuginfoUpgrade bpftool6.18-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade kernel6.18-modules-extra | Aug 10, 2026 | Jul 19, 2026 |
| Redhat_linux | — | No solution exists | Jul 23, 2026 | Jul 19, 2026 |
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