Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-rt-64k-modules-partner (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS9-KERNELRT64KMODULESPARTNER-12527401
- published6 Sept 2025
- disclosed5 Sept 2025
Introduced: 5 Sep 2025
CVE-2025-39698 (opens in a new tab)Amendment
The Centos security team deemed this advisory irrelevant for Centos:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-modules-partner package and not the kernel-rt-64k-modules-partner package as distributed by Centos.
In the Linux kernel, the following vulnerability has been resolved:
io_uring/futex: ensure io_futex_wait() cleans up properly on failure
The io_futex_data is allocated upfront and assigned to the io_kiocb async_data field, but the request isn't marked with REQ_F_ASYNC_DATA at that point. Those two should always go together, as the flag tells io_uring whether the field is valid or not.
Additionally, on failure cleanup, the futex handler frees the data but does not clear ->async_data. Clear the data and the flag in the error path as well.
Thanks to Trend Micro Zero Day Initiative and particularly ReDress for reporting this.
References
- https://access.redhat.com/security/cve/CVE-2025-39698
- https://git.kernel.org/stable/c/508c1314b342b78591f51c4b5dadee31a88335df
- https://git.kernel.org/stable/c/d34c04152df517c59979b4bf2a47f491e06d3256
- https://git.kernel.org/stable/c/d9f93172820a53ab42c4b0e5e65291f4f9d00ad2
- https://www.zerodayinitiative.com/advisories/ZDI-25-915/