PT-2026-64603 · Linux · Linux

CVE-2026-64382 · Published 2026-07-25 · Updated 2026-07-25

Mitre

In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix double-free in SMB2 open() replay

A response-bearing attempt can return a replayable error and free its response buffer. If SMB2 open 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.

Related Identifiers

CVE-2026-64382

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-64382 · Security Note
• https://git.kernel.org/stable/c/ff2d30927bc3bf3c629f0768d2068096e64ef5ce · Note
• https://git.kernel.org/stable/c/14498ff5ce0f272ce0ef988721413e06b7038972 · Note
• https://git.kernel.org/stable/c/b55e182f2324bc6a604c21a47aa6c448f719a532 · Note
• https://git.kernel.org/stable/c/3196b5192f246df4272072f61a2f4a3e9967f55d · Note
• https://git.kernel.org/stable/c/02bc2896bdc3e29362d6e40d404006944a159c25 · Note