CVE-2026-31609

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.

CVSS 3.1

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

EPSS

0.5% chance of exploitation in the next 30 days; higher than 39% of CVEs (scores of 2026-10-25)

CWE

CWE-415

Published

2026-04-24

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

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

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