CVE-2026-31608 | In the Linux kernel, the following vulnerability has been re… | CVSS 9.8 CRITICAL

Description

In the Linux kernel, the following vulnerability has been resolved: smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list() smb_direct_flush_send_list() already calls smb_direct_free_sendmsg(), so we should not call it again after post_sendmsg() moved it to the batch list.

Metadata

CVE ID: CVE-2026-31608
State: PUBLISHED
Assigner: Linux
Reserved: 2026-03-09 15:48 UTC
Published: 2026-04-24 14:42 UTC
Last updated: 2026-06-14 17:42 UTC
Vendor / Product: Linux / Linux
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

Affected products (2)

Vendor	Product	Platform	Versions
Linux	Linux	—	5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7 < 6968c91fab05b8fc4d6700e0cf34472bb422df25, 79242e7b6bc63efec28b7c235bc320806afce6c0 < 2ba03f46132b0d1a7bafb86e1ef61951a2254023, 34abd408c8ba24d7c97bd02ba874d8c714f49db1 < 830de6eeb9db4cb7e758201fb99328ef4ca4b032, 34abd408c8ba24d7c97bd02ba874d8c714f49db1 < 84ff995ae826aa6bbcc6c7b9ea569ff67c021d72 …
Linux	Linux	—	7.0, 0 < 7.0, 6.18.24 ≤ 6.18., 6.19.14 ≤ 6.19. …

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (4)