CVE•Published 2026-07-25•Modified 2026-07-27•1 article on news•5 live references•NVD data

CVE-2026-64383

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

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

EPSS percentile

Exploit Prediction Scoring System · top 89% of all CVEs

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.

Timeline

Published 2026-07-25

Modified 2026-07-27

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

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Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

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vuln:CVE-2026-64383

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More intel sources (5)

Shodan report

vuln:CVE-2026-64383

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Censys

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CVE-2026-64383