CVEvulnerability

CVE-2025-68317

7.8 HIGH Published 2025-12-16 Modified 2026-10-15 Official page ↗

Status: Deferred
Published: 2025-12-16
Last modified: 2026-10-15
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

Description

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.

References

https://git.kernel.org/stable/c/aaafd17d3f4be2c15539359a5b4bfa00237f687f git.kernel.org
https://git.kernel.org/stable/c/ab3ea6eac5f45669b091309f592c4ea324003053 git.kernel.org
https://git.kernel.org/stable/c/d664a3ce3a604231a0b144c152a3755d03b18b60 git.kernel.org