CVE-2026-64597critical

smb: client: fix double-free in SMB2_close() replay

25Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 9.8

probabilidad de explotación

—

explotación observada

noninguna fuente lo reporta

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_close() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_close_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale free.

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

Productos afectados

Linux · Linux

Referencias

https://git.kernel.org/stable/c/037511726228aaf165c7067ff2bfc88eaecdf1f3 https://git.kernel.org/stable/c/0aa97edf7c347c0f54e7e60c4740574b8120c66a https://git.kernel.org/stable/c/b18ed621dbfceecea5539848cddcb9272c9a61e1 https://git.kernel.org/stable/c/d15d83125007f673aec4323e1bbbaaffbe87ea13 https://git.kernel.org/stable/c/f96e1cdcb63ed3321142ff2fcdf784e32cda8fee