Vulnerability in Linux

CVE-2026-64208

In the Linux kernel, the following vulnerability has been resolved: crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks Change the krb5 crypto library to provide facilities to precheck the length of the message about to be decrypted or verified. Fix AF_RXRPC to make use of this to validate DATA packets secured with RxGK.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-64208: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

  • Linux — versions 9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a, 6.16, 0
  • Linux Kernel — versions 7.1

References

Frequently asked questions

What is CVE-2026-64208?
CVE-2026-64208 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2026-07-24.
How severe is CVE-2026-64208?
High severity. CVSS v3 base score is 7.5 out of 10.