CVE-2025-39964 — In the Linux kernel, the following vulnerability has been resolved:

In the Linux kernel, the following vulnerability has been resolved:

01What is this vulnerability?

In the Linux kernel, the following vulnerability has been resolved:

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-10-13T14:15:34.737
• Last modified: 2026-07-30T06:24:01.443

09References

• git.kernel.org — https://git.kernel.org/stable/c/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce
• git.kernel.org — https://git.kernel.org/stable/c/1b34cbbf4f011a121ef7b2d7d6e6920a036d5285
• git.kernel.org — https://git.kernel.org/stable/c/1f323a48e9b5ebfe6dc7d130fdf5c3c0e92a07c8
• git.kernel.org — https://git.kernel.org/stable/c/45bcf60fe49b37daab1acee57b27211ad1574042
• git.kernel.org — https://git.kernel.org/stable/c/7c4491b5644e3a3708f3dbd7591be0a570135b84
• git.kernel.org — https://git.kernel.org/stable/c/9aee87da5572b3a14075f501752e209801160d3d
• git.kernel.org — https://git.kernel.org/stable/c/e4c1ec11132ec466f7362a95f36a506ce4dc08c9
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-019113.html