CVEvulnerability
CVE-2021-47123
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2024-03-15
- Last modified
- 2026-08-04
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-415, CWE-416
Description
In the Linux kernel, the following vulnerability has been resolved:
io_uring: fix ltout double free on completion race
Always remove linked timeout on io_link_timeout_fn() from the master
request link list, otherwise we may get use-after-free when first
io_link_timeout_fn() puts linked timeout in the fail path, and then
will be found and put on master's free.
Affected configurations
• linux linux kernel (>= 5.11 < 5.12.10)
• linux linux kernel 5.13
Related
References
- https://git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d Patch
- https://git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba Patch
- https://git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d Patch
- https://git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba Patch