CVE-2026-31609

critical · 9.8

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.

9.8

CVSS

0.5%

EPSS (exploit prob.)

39th

EPSS percentile

2026-04-24

Published

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

Weaknesses

CWE-415

Affected products

Vendor	Product	Affected versions
linux	linux_kernel	< 6.18.24
linux	linux_kernel	>= 6.19, < 6.19.14
linux	linux_kernel	>= 7.0, < 7.0.1

Check a specific version with /api/v1/cve/match.

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-31609