CRITICAL: CVE-2026-31536 (CVSS 9.8) — multiple products

CVE: CVE-2026-31536

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

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

smb: server: let send_done handle a completion without IB_SEND_SIGNALED

With smbdirect_send_batch processing we likely have requests without

IB_SEND_SIGNALED, which will be destroyed in the final request

that has IB_SEND_SIGNALED set.

If the connection is broken all requests are signaled

even without explicit IB_SEND_SIGNALED.

Verified Sources

References

https://git.kernel.org/stable/c/24082642654f3e5149913946e89c00a297a8868f
https://git.kernel.org/stable/c/9da82dc73cb03e85d716a2609364572367a5ff47
https://git.kernel.org/stable/c/e38b415c024bc3b6321bf8650dbf3f4aab8e74b3

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical