CVE-2026-64381

high

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix next buffer leak in receive_encrypted_standard() receive_encrypted_standard() allocates next_buffer before checking whether the number of compound PDUs already reached MAX_COMPOUND. If the limit check fails, the function returns immediately and the newly allocated next_buffer is not assigned to server->smallbuf/server->bigbuf, making it leaked. Move the MAX_COMPOUND check before allocating next_buffer.

References

https://git.kernel.org/stable/c/94e4f672db029414b9888b5137a7559f1febf2d8

https://git.kernel.org/stable/c/927d4805aea0a287d36dd4f826ee24d69a2afee3

https://git.kernel.org/stable/c/9136a08dc29328edd9867f2545e73906ac9df93b

https://git.kernel.org/stable/c/68fc0b6cc03ca58060c0f36454e169f5fe258974

https://git.kernel.org/stable/c/67097772df7791c53d608f04bd31c676ccf79b83

https://git.kernel.org/stable/c/297243e365fc9fe2f8e9b7dd535a65d922cd108b

https://git.kernel.org/stable/c/1c6267a1d5cf4c73b656f8181b310cbbb3e4767b

https://git.kernel.org/stable/c/07e0ab81df1790afa35732a4e8e07ff831b29008

Details

Source: Mitre, NVD

Published: 2026-07-25

Updated: 2026-07-25

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

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

Severity: High

EPSS

EPSS: 0.0022