CVE-2026-64509
CVE CVE-2026-64509EUVD EUVD-2026-48853Published 2026-07-25T08:52:02.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 3253aba3408aa4eb2e4e09365eede3e63ef7536b <d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb; patch: 0; patch: 7.2-rc1; 3253aba3408aa4eb2e4e09365eede3e63ef7536b <e7636f26f77070a529c26d65afd217514ce85ce4; 6.11; patch: 6.12.97; patch: 6.18.39; 3253aba3408aa4eb2e4e09365eede3e63ef7536b <6822a2685b4da9a87efd1fce4b042678a31ff734; 3253aba3408aa4eb2e4e09365eede3e63ef7536b <2957771379fa335103a4b539db57bb2271e12142; patch: 7.1.4
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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