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Vulnerabilities CVE-2026-64597

CVE-2026-64597

Critical
Open
TLP:CLEAR

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

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Description

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.

Details

CVSS Score
9.8
EPSS Score
0.36%

29.2th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Aug 6, 2026
Last Modified
Aug 8, 2026
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