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CVE-2026-64386

9.8 critical SSVC exploitation: none Modified
NVD · CVE.org

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_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.

Fix

Patch, vendor advisory and mitigation references on NVD 5

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 2

  1. StatusAnalyzed → ModifiedNVD modified 2026-10-19 21:17
  2. First seenCVSS 9.8 · linuxNVD modified 2026-10-16 16:19

Affected (CPE criteria) 8

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.8:rc7:*:*:*:*:*:*

References 5