CVE-2025-68317

CVE-2025-68317 is a security vulnerability that is still awaiting full analysis and scoring. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

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.

Frequently asked questions

What is CVE-2025-68317?
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.
Is CVE-2025-68317 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-68317?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-68317 have an EU (EUVD) identifier?
Yes. CVE-2025-68317 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203752.
When was CVE-2025-68317 published?
CVE-2025-68317 was published on 2025-12-16 and last updated on 2026-06-17.

References