Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 672464dd53231509c9c771110798c56d4660e19e before 0dfa42cfe4dbe114533480503934f43e33c1e83d; affected 61bd96d3e5472c253f9c1ab77608f0c8aaa9d025 before cde2c9257cbe8463b9dcf7b1075177b72b5fd938; affected 5e28b7b94408897e41c63477aabc9e1db439bc8c before 7164d78559b0ff29931a366a840a9e5dd53d4b7c |
| Linux / Linux | affected 6.18.32 before 6.18.35; affected 7.0.9 before 7.0.12 |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0dfa42cfe4dbe114533480503934f43e33c1e83d
- https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938
- https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c
ADP enrichment
No English description supplied.
No references supplied.