CRITICAL: CVE-2026-31609 (CVSS 9.8) — multiple products

CVE: CVE-2026-31609

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: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()

smbd_send_batch_flush() already calls smbd_free_send_io(),

so we should not call it again after smbd_post_send()

moved it to the batch list.

Verified Sources

References

https://git.kernel.org/stable/c/22b7c1c619d808aec4cad3dc42103345e370d107
https://git.kernel.org/stable/c/27b7c3e916218b5eb2ee350211140e961bfc49be
https://git.kernel.org/stable/c/a9940dcbe5cb92482c04efc7341039ddf7dbf607
https://git.kernel.org/stable/c/f9a162c2bbcd0ac85bd07c5b37cf20286048b65c

_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