CVE-2026-64382
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix double-free in SMB2_open() replay
A response-bearing attempt can return a replayable error and free its
response buffer. If SMB2_open_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.
CSIRTS triage
- What
- This vulnerability addresses a double-free issue in the SMB2_open() function.
- Who is affected
- Deployments using the SMB client.
- Urgency
- Remediation is important to prevent potential memory corruption and crashes.
- Action
- Apply the fix for CVE-2026-64382.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
Advisory coverage (2)
External references
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