CVE-2025-21967
Published: April 2, 2025Last modified: November 3, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_free_work_struct ->interim_entry of ksmbd_work could be deleted after oplock is freed. We don't need to manage it with linked list. The interim request could be immediately sent whenever a oplock break wait is needed.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.191-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/62746ae3f5414244a96293e3b017be637b641280
- https://git.kernel.org/stable/c/bb39ed47065455604729404729d9116868638d31
- https://git.kernel.org/stable/c/eb51f6f59d19b92f6fe84d3873f958495ab32f0a
- https://git.kernel.org/stable/c/fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3
- https://git.kernel.org/stable/c/ffe0909010b21df8f948d624ad00cf14dd856721