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In the Linux kernel, the following vulnerability has been resolved:
drm/tests: shmem: Hold reservation lock around vmap/vunmap
Acquire and release the GEM object's reservation lock around vmap and vunmap operations. The tests use vmap_locked, which led to errors such as show below.
[ 122.292030] WARNING: CPU: 3 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:390 drm_gem_shmem_vmap_locked+0x3a3/0x6f0
[ 122.468066] WARNING: CPU: 3 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:293 drm_gem_shmem_pin_locked+0x1fe/0x350
[ 122.563504] WARNING: CPU: 3 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:234 drm_gem_shmem_get_pages_locked+0x23c/0x370
[ 122.662248] WARNING: CPU: 2 PID: 1413 at drivers/gpu/drm/drm_gem_shmem_helper.c:452 drm_gem_shmem_vunmap_locked+0x101/0x330
Only export the new vmap/vunmap helpers for Kunit tests. These are not interfaces for regular drivers.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-headersUpgrade kernel6.18-debuginfoUpgrade kernel6.18Upgrade kernel6.18-toolsUpgrade kernel6.18-modules-extraUpgrade kernel6.18-libbpfUpgrade kernel-livepatch-6.18.16-18.222Upgrade kernel6.18-develUpgrade kernel6.18-libbpf-staticUpgrade kernel6.18-tools-develUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-tools-debuginfoUpgrade kernel6.18-libbpf-debuginfoUpgrade kernel6.18-libbpf-develUpgrade python3-perf6.18-debuginfoUpgrade perf6.18Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-modules-extra-commonUpgrade bpftool6.18-debuginfoUpgrade python3-perf6.18Upgrade bpftool6.18 | May 19, 2026 | May 8, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | May 8, 2026 |
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