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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
672464dd53231509c9c771110798c56d4660e19e affected < 0dfa42cfe4dbe114533480503934f43e33c1e83d
61bd96d3e5472c253f9c1ab77608f0c8aaa9d025 affected < cde2c9257cbe8463b9dcf7b1075177b72b5fd938
5e28b7b94408897e41c63477aabc9e1db439bc8c affected < 7164d78559b0ff29931a366a840a9e5dd53d4b7c
Linux Linux unaffected
Version Status Constraints
6.18.32 affected < 6.18.35
7.0.9 affected < 7.0.12

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https://git.kernel.org/stable/c/0dfa42cfe4dbe114533480503934f43e33c1e83d cve-icon
https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c cve-icon
https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938 cve-icon
History

Sun, 19 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title drm/gem: fix race between change_handle and handle_delete
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-19T14:54:58.590Z

Reserved: 2026-07-19T07:54:57.018Z

Link: CVE-2026-63885

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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