CVE-2026-64385 — smb: client: fix double-free in SMB2_ioctl() replay
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 erro…
Published: 2026-07-25 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7