drm: Replace old pointer to new idr

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Summary

CVECVE-2026-52966
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:07 UTC
Updated2026-06-24 17:17:07 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm: Replace old pointer to new idr Commit 5e28b7b94408 introduced a logical error by failing to replace the newly generated IDR pointer to old id's pointer at the correct location within the "change handle" logic; this resulted in the issue reported by syzbot [1]. Specifically, the new IDR object pointer is intended to replace the original id's pointer during the normal execution flow. Additionally, an unnecessary conditional check for the ret exit path has been removed. [1] !RB_EMPTY_ROOT(&prime_fpriv->dmabufs) WARNING: drivers/gpu/drm/drm_prime.c:224 at drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224, CPU#0: syz.0.17/5833 Call Trace: drm_file_free.part.0+0x7e6/0xcc0 drivers/gpu/drm/drm_file.c:269 drm_file_free drivers/gpu/drm/drm_file.c:237 [inline] drm_close_helper.isra.0+0x186/0x200 drivers/gpu/drm/drm_file.c:290 drm_release+0x1ab/0x360 drivers/gpu/drm/drm_file.c:438

Risk And Classification

EPSS: 0.001860000 probability, percentile 0.084170000 (date 2026-06-25)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 672464dd53231509c9c771110798c56d4660e19e 318b995cffcfcaa69a234d28123a3f4ae186a9df git Not specified
CNA Linux Linux affected 61bd96d3e5472c253f9c1ab77608f0c8aaa9d025 38f12d0e10d83b66fa1466400d876a3a8da31542 git Not specified
CNA Linux Linux affected 5e28b7b94408897e41c63477aabc9e1db439bc8c dc366607c41c45fd0ae6f3db090f31dd611b644a git Not specified
CNA Linux Linux affected 6.18.32 6.18.33 semver Not specified
CNA Linux Linux affected 7.0.9 7.0.10 semver Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/dc366607c41c45fd0ae6f3db090f31dd611b644a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/318b995cffcfcaa69a234d28123a3f4ae186a9df 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/38f12d0e10d83b66fa1466400d876a3a8da31542 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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