Answer in brief
CVE-2026-64509 records a Unknown severity vulnerability in rust: block: fix GenDisk cleanup paths. 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 | >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb || >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <e7636f26f77070a529c26d65afd217514ce85ce4 || >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <6822a2685b4da9a87efd1fce4b042678a31ff734 || >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <2957771379fa335103a4b539db57bb2271e12142 | d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb, e7636f26f77070a529c26d65afd217514ce85ce4, 6822a2685b4da9a87efd1fce4b042678a31ff734, 2957771379fa335103a4b539db57bb2271e12142 |
| Linux/Linuxgeneric | 6.11 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
In the Linux kernel, the following vulnerability has been resolved: rust: block: fix GenDisk cleanup paths GenDiskBuilder::build() still has fallible work after __blk_mq_alloc_disk(), but its error path only recovers the foreign queue data. That leaks the temporary gendisk and request_queue until later teardown. If the caller moved the last Arc<TagSet<T>> into build(), the leaked queue can retain blk-mq state after the tag set is dropped. Fix the pre-registration failure path by dropping the temporary gendisk reference with put_disk() before recovering queue_data, so disk_release() can tear down the owned queue. Also pair GenDisk::drop() with put_disk() after del_gendisk(). Once a Rust GenDisk has been added with device_add_disk(), del_gendisk() only unregisters it; the final gendisk reference still has to be dropped to complete the release path.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64509 records a Unknown severity vulnerability in rust: block: fix GenDisk cleanup paths. 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 | >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb || >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <e7636f26f77070a529c26d65afd217514ce85ce4 || >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <6822a2685b4da9a87efd1fce4b042678a31ff734 || >=3253aba3408aa4eb2e4e09365eede3e63ef7536b <2957771379fa335103a4b539db57bb2271e12142 | d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb, e7636f26f77070a529c26d65afd217514ce85ce4, 6822a2685b4da9a87efd1fce4b042678a31ff734, 2957771379fa335103a4b539db57bb2271e12142 |
| Linux/Linuxgeneric | 6.11 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
In the Linux kernel, the following vulnerability has been resolved: rust: block: fix GenDisk cleanup paths GenDiskBuilder::build() still has fallible work after __blk_mq_alloc_disk(), but its error path only recovers the foreign queue data. That leaks the temporary gendisk and request_queue until later teardown. If the caller moved the last Arc<TagSet<T>> into build(), the leaked queue can retain blk-mq state after the tag set is dropped. Fix the pre-registration failure path by dropping the temporary gendisk reference with put_disk() before recovering queue_data, so disk_release() can tear down the owned queue. Also pair GenDisk::drop() with put_disk() after del_gendisk(). Once a Rust GenDisk has been added with device_add_disk(), del_gendisk() only unregisters it; the final gendisk reference still has to be dropped to complete the release path.
Quoted source text, attributed separately from HOL analysis.