CVE-2026-64387
smb: client: fix query directory replay double-free
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query directory replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_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 < 3409aedf3c81a810243da94164f6621c9d205c98 4f1fffa2376922f3d1d506e49c0fd445b023a28e < 1665f25b1dea30bf2d02e16245d203a944c9d994 4f1fffa2376922f3d1d506e49c0fd445b023a28e < 00b0fa425941438b664950a8ee65dfba2def4336 4f1fffa2376922f3d1d506e49c0fd445b023a28e < 3317a5d015fca976475aa71df224056777316fde 4f1fffa2376922f3d1d506e49c0fd445b023a28e < 9647492b5e41954be59d5157eddbcd4cdc1656f7 6.6.32 < 6.6.145
Linux / Linux
6.8
References
git.kernel.org: https://git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98 git.kernel.org: https://git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994 git.kernel.org: https://git.kernel.org/stable/c/00b0fa425941438b664950a8ee65dfba2def4336 git.kernel.org: https://git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fde git.kernel.org: https://git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7