CVE-2026-64383
critical · 9.8In 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.
9.8
CVSS
0.5%
EPSS (exploit prob.)
39th
EPSS percentile
2026-07-25
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-415
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux_kernel | >= 6.6.32, < 6.6.145 |
| linux | linux_kernel | >= 6.8.1, < 6.12.96 |
| linux | linux_kernel | >= 6.13, < 6.18.39 |
| linux | linux_kernel | >= 6.19, < 7.1.4 |
| linux | linux_kernel | 6.8 |
| linux | linux_kernel | 6.8 |
| linux | linux_kernel | 6.8 |
| linux | linux_kernel | 6.8 |
| linux | linux_kernel | 6.8 |
| linux | linux_kernel | 6.8 |
| linux | linux_kernel | 6.8 |
Check a specific version with /api/v1/cve/match.
References
- 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
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-64383