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.

Package Linux Kernel
Published 2026-07-24
Last modified 2026-07-24
Patch available
Yes

Affected versions

Linux kernel versions 6.16 and later are affected. Fixed in 6.18.34, 7.0.11, 7.1 and their respective stable series.

Affected from
≥ 6.16
Fixed in
✓ 6.18.34 6.18.x ✓ 7.0.11 7.0.x ✓ 7.1

References

3 total

Frequently asked questions

  • What is CVE-2026-64208?

    CVE-2026-64208 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.34, 7.0.11 and 7.1. CVE-2026-64208 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-64208?

    Yes. CVE-2026-64208 has been patched. Fixed versions include 6.18.34, 7.0.11 and 7.1. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-64208 actively exploited?

    No. CVE-2026-64208 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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