CVE-2025-68317
High
io_uring/zctx: check chained notif contexts
In the Linux kernel, the following vulnerability has been resolved: io_uring/zctx: check chained notif contexts Send zc only links ubuf_info for requests coming from the same context. There are some ambiguous syz reports, so let's check the assumption on notification completion.
Exploit probability
0.1%
Published
December 16, 2025
Required by
Not available
Last source change
August 12, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2025-68317
View original source
In the Linux kernel, the following vulnerability has been resolved: io_uring/zctx: check chained notif contexts Send zc only links ubuf_info for requests coming from the same context. There are some ambiguous syz reports, so let's check the assumption on notification completion.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/aaafd17d3f4be2c15539359a5b4bfa00237f687f
- https://git.kernel.org/stable/c/ab3ea6eac5f45669b091309f592c4ea324003053
- https://git.kernel.org/stable/c/d664a3ce3a604231a0b144c152a3755d03b18b60
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68317.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-68317