Critical severity9.8NVD Advisory· Published Jul 25, 2026· Updated Aug 17, 2026
CVE-2026-64387
CVE-2026-64387
Description
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.
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/00b0fa425941438b664950a8ee65dfba2def4336nvd
- git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994nvd
- git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fdenvd
- git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98nvd
- git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7nvd
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