CVE-2026-64384
Published: July 28, 2026Last modified: July 28, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_notify_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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Not affected (6.1.33-r0) |
| 25 LTS | linux-lts | Vulnerable (6.12.95-r0) | |
| Stream | linux-lts | Vulnerable (6.18.38-r0) |
References
- https://git.kernel.org/stable/c/145f820dcbb2cced374f2532f8a61a44dce4a615
- https://git.kernel.org/stable/c/52af1975f0dfae990c5a0e85872cc41be0e88a68
- https://git.kernel.org/stable/c/5821f9dbb8b5b24391850a13418e633edd0fb003
- https://git.kernel.org/stable/c/901891513951bc8322ece754863909ea45af95c6
- https://git.kernel.org/stable/c/d684f4134998085702009b94c35c2003fc9e72d3