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.
References
Configurations
Configuration 1 (hide)
|
History
12 Nov 2026, 19:07
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-401 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/2957771379fa335103a4b539db57bb2271e12142 - Patch | |
| References | () https://git.kernel.org/stable/c/6822a2685b4da9a87efd1fce4b042678a31ff734 - Patch | |
| References | () https://git.kernel.org/stable/c/d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb - Patch | |
| References | () https://git.kernel.org/stable/c/e7636f26f77070a529c26d65afd217514ce85ce4 - Patch |
Information
Published : 2026-07-25 10:17
Updated : 2026-11-12 19:07
NVD link : CVE-2026-64509
Mitre link : CVE-2026-64509
CVE.ORG link : CVE-2026-64509
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime