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CVE-2026-64384

smb: client: fix change notify replay double-free

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.6.145, 6.12.96, 6.18.39, 7.1.4
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_notify_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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 433042a91f9373241307725b52de573933ffedbf · fixed in 5821f9dbb8b5b24391850a13418e633edd0fb003; From 4f1fffa2376922f3d1d506e49c0fd445b023a28e · fixed in d684f4134998085702009b94c35c2003fc9e72d3; From 4f1fffa2376922f3d1d506e49c0fd445b023a28e · fixed in 52af1975f0dfae990c5a0e85872cc41be0e88a68; From 4f1fffa2376922f3d1d506e49c0fd445b023a28e · fixed in 901891513951bc8322ece754863909ea45af95c6; From 4f1fffa2376922f3d1d506e49c0fd445b023a28e · fixed in 145f820dcbb2cced374f2532f8a61a44dce4a615; From 6.6.32 · fixed in 6.6.145

  • Linux Linux

    6.8

  • KernelLinux

    fixed in 6.6.145; From 6.7.0 · fixed in 6.12.96; From 6.8.0 · fixed in 6.18.39; From 6.13.0 · fixed in 7.1.4

References 5

git.kernel.org