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CVE-2026-64597

Last refreshed2026-10-17

Status: UPDATED  |  Advisory ID: CVE-2026-64597

Key Details

CVECVE-2026-64597
CVSS Score / Version
9.8 (Critical) / CVSS v3.1
Updated2026-10-16
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Prose
attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
Linux Kernel

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
LinuxLinux Kernel
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

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. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-64597
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-64597

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