Description
In the Linux kernel, the following vulnerability has been resolved:
kasan: remove kasan_find_vm_area() to prevent possible deadlock
find_vm_area() couldn't be called in atomic_context. If find_vm_area() is called to reports vm area information, kasan can trigger deadlock like:
CPU0 CPU1 vmalloc(); alloc_vmap_area(); spin_lock(&vn->busy.lock) spin_lock_bh(&some_lock); <interrupt occurs> <in softirq> spin_lock(&some_lock); <access invalid address> kasan_report(); print_report(); print_address_description(); kasan_find_vm_area(); find_vm_area(); spin_lock(&vn->busy.lock) // deadlock!
To prevent possible deadlock while kasan reports, remove kasan_find_vm_area().
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= c056a364e9546bd513d1f5205f0ee316d8acb910, < 595f78d99b9051600233c0a5c4c47e1097e6ed01; >= c056a364e9546bd513d1f5205f0ee316d8acb910, < 8377d7744bdce5c4b3f1b58924eebd3fdc078dfc; >= c056a364e9546bd513d1f5205f0ee316d8acb910, < 2d89dab1ea6086e6cbe6fe92531b496fb6808cb9; >= c056a364e9546bd513d1f5205f0ee316d8acb910, < 0c3566d831def922cd56322c772a7b20d8b0e0c0; >= c056a364e9546bd513d1f5205f0ee316d8acb910, < 6ee9b3d84775944fb8c8a447961cd01274ac671c |
| Linux | Linux | 5.18 |
References
- https://git.kernel.org/stable/c/0c3566d831def922cd56322c772a7b20d8b0e0c0Patch
- https://git.kernel.org/stable/c/2d89dab1ea6086e6cbe6fe92531b496fb6808cb9Patch
- https://git.kernel.org/stable/c/595f78d99b9051600233c0a5c4c47e1097e6ed01Patch
- https://git.kernel.org/stable/c/6ee9b3d84775944fb8c8a447961cd01274ac671cPatch
- https://git.kernel.org/stable/c/8377d7744bdce5c4b3f1b58924eebd3fdc078dfcPatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing List, Third Party Advisory
Timeline
- Published
- Aug 16, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Analyzed