What is CVE-2026-64090?

CVE-2026-64090 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 3.13 onward and patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-64090 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64090?

CVE-2026-64090 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-64090?

Yes, CVE-2026-64090 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 3.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64090 actively exploited?

CVE-2026-64090 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-64090

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid empty VLAN responses The commit 16116dac2339 ("batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs") added checks to the local (direct) TT response code. But the response can also be done indirectly by another node using the global TT state. To avoid such inconsistency states reported in the original fix, also avoid sending empty VLANs for replies from the global TT state.

Package Linux Kernel

Published 2026-07-19

Last modified 2026-07-19

Patch available

Yes

Affected versions

Linux kernel versions 3.13 and later are affected. Fixed in 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.34, 7.0.11, 7.1 and their respective stable series.

Affected from

≥ 3.13

Fixed in

✓ 5.10.259 5.10.x ✓ 5.15.210 5.15.x ✓ 6.1.176 6.1.x ✓ 6.6.143 6.6.x ✓ 6.12.93 6.12.x ✓ 6.18.34 6.18.x ✓ 7.0.11 7.0.x ✓ 7.1

References

8 total

Showing 5 of 8 references View all on NVD

Frequently asked questions

What is CVE-2026-64090?

CVE-2026-64090 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.13 onward and has been patched in 5.10.259, 5.15.210, 6.1.176 and others. CVE-2026-64090 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-64090?

Yes — CVE-2026-64090 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.176 and others. If you are running Linux kernel 3.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64090 actively exploited?

No — CVE-2026-64090 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.