Answer in brief
CVE-2026-63885 records a Unknown severity vulnerability in drm/gem: fix race between change_handle and handle_delete. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=672464dd53231509c9c771110798c56d4660e19e <0dfa42cfe4dbe114533480503934f43e33c1e83d || >=61bd96d3e5472c253f9c1ab77608f0c8aaa9d025 <cde2c9257cbe8463b9dcf7b1075177b72b5fd938 || >=5e28b7b94408897e41c63477aabc9e1db439bc8c <7164d78559b0ff29931a366a840a9e5dd53d4b7c | 0dfa42cfe4dbe114533480503934f43e33c1e83d, cde2c9257cbe8463b9dcf7b1075177b72b5fd938, 7164d78559b0ff29931a366a840a9e5dd53d4b7c |
| Linux/Linuxgeneric | >=6.18.32 <6.18.35 || >=7.0.9 <7.0.12 | 6.18.35, 7.0.12 |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-63885 records a Unknown severity vulnerability in drm/gem: fix race between change_handle and handle_delete. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=672464dd53231509c9c771110798c56d4660e19e <0dfa42cfe4dbe114533480503934f43e33c1e83d || >=61bd96d3e5472c253f9c1ab77608f0c8aaa9d025 <cde2c9257cbe8463b9dcf7b1075177b72b5fd938 || >=5e28b7b94408897e41c63477aabc9e1db439bc8c <7164d78559b0ff29931a366a840a9e5dd53d4b7c | 0dfa42cfe4dbe114533480503934f43e33c1e83d, cde2c9257cbe8463b9dcf7b1075177b72b5fd938, 7164d78559b0ff29931a366a840a9e5dd53d4b7c |
| Linux/Linuxgeneric | >=6.18.32 <6.18.35 || >=7.0.9 <7.0.12 | 6.18.35, 7.0.12 |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.