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THREAT OPS › Threat News › [NVD] CVE-2026-64597 (CRITICAL 9.8) — 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 pr

[NVD] CVE-2026-64597 (CRITICAL 9.8) — 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 pr

mednvdPublished 2026-08-06

CVE-2026-64597 CVSS: 9.8 CRITICAL Published: 2026-08-06T08:16:35.340

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.

Indicators of compromise

CVE-2026-64597cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64597