Description
In the Linux kernel, the following vulnerability has been resolved:
io_uring: fix memory leak when removing provided buffers
When removing provided buffers, io_buffer structs are not being disposed of, leading to a memory leak. They can't be freed individually, because they are allocated in page-sized groups. They need to be added to some free list instead, such as io_buffers_cache. All callers already hold the lock protecting it, apart from when destroying buffers, so had to extend the lock there.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= cc3cec8367cba76a8ae4c271eba8450f3efc1ba3, < ac48787f58d1068f4e06d627c1135784d64b4c72; >= cc3cec8367cba76a8ae4c271eba8450f3efc1ba3, < c117c15927772d1624c29c092b6bd3f47c7faa48; >= cc3cec8367cba76a8ae4c271eba8450f3efc1ba3, < b4a72c0589fdea6259720375426179888969d6a2 |
| Linux | Linux | 5.18 |
References
Timeline
- Published
- Dec 24, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Deferred