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 t…

Code

The project this record applies to. Exploit listings stay in References.

• Repository · git.kernel.org
• Repository · git.kernel.org
• Repository · git.kernel.org

Timeline

Detection, updates, and resolution for this record.

1. Dec 16, 2025 · NIST NVD

   Detected

   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.

2. Oct 14, 2026 · NIST NVD

   Updated

   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.

Sources

• CVE.orgVulnerability recordCVE-2025-68317

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2025-68317

  30-day exploitation probability 0.1%

  first.org
• NIST NVDVulnerability recordCVE-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

  nvd.nist.gov

References

• Reference · git.kernel.org
• Reference · git.kernel.org
• Reference · git.kernel.org