Critical severity9.8NVD Advisory· Published Jul 25, 2026· Updated Aug 17, 2026
CVE-2026-64385
CVE-2026-64385
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix double-free in SMB2_ioctl() replay
A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_ioctl_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.
Affected products
3- osv-coords2 versions
< 6.6.145+ 1 more
- (no CPE)range: < 6.6.145
- (no CPE)range: < 7.1.7-1.1
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/0be4bc64882edaefaaee8d1e27d083643eb778e6nvd
- git.kernel.org/stable/c/276c8efbc49f9303ac76d0d4deab7128581b0f3bnvd
- git.kernel.org/stable/c/96fcfc8ae7359346156e492ca610e830d2649ad6nvd
- git.kernel.org/stable/c/f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9nvd
- git.kernel.org/stable/c/fc65ffb4ef1bf540da16b17c225ae51091e07d72nvd
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