CVE-2026-64385
smb: client: fix double-free in SMB2_ioctl() replay
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 25, 2026 |
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Affected Versions
Linux / Linux
433042a91f9373241307725b52de573933ffedbf < 0be4bc64882edaefaaee8d1e27d083643eb778e6 4f1fffa2376922f3d1d506e49c0fd445b023a28e < 96fcfc8ae7359346156e492ca610e830d2649ad6 4f1fffa2376922f3d1d506e49c0fd445b023a28e < 276c8efbc49f9303ac76d0d4deab7128581b0f3b 4f1fffa2376922f3d1d506e49c0fd445b023a28e < fc65ffb4ef1bf540da16b17c225ae51091e07d72 4f1fffa2376922f3d1d506e49c0fd445b023a28e < f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9 6.6.32 < 6.6.145
Linux / Linux
6.8
References
git.kernel.org: https://git.kernel.org/stable/c/0be4bc64882edaefaaee8d1e27d083643eb778e6 git.kernel.org: https://git.kernel.org/stable/c/96fcfc8ae7359346156e492ca610e830d2649ad6 git.kernel.org: https://git.kernel.org/stable/c/276c8efbc49f9303ac76d0d4deab7128581b0f3b git.kernel.org: https://git.kernel.org/stable/c/fc65ffb4ef1bf540da16b17c225ae51091e07d72 git.kernel.org: https://git.kernel.org/stable/c/f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9