CVE-2026-64383
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer …
Impact
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 6.6.32 before 6.6.145 from 6.8.1 before 6.12.96 from 6.13 before 6.18.39 from 6.19 before 7.1.4 Version 6.8 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/013a9a3da46c5dabcf18f65ea6a47874ba12a15d
- https://git.kernel.org/stable/c/3407240cde132a4b72d6429a2625a09a2f78adaf
- https://git.kernel.org/stable/c/4be31c943a3a27a5a0251dbb8f5cb89059ec3d5a
- https://git.kernel.org/stable/c/6e27f40b682a5e42a2daae3ce6d96f0e0e16dedb
- https://git.kernel.org/stable/c/878757163eea684750107a31ea134c103863515d