CVE-2026-45962
Published: May 28, 2026Last modified: June 24, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ublk: Validate SQE128 flag before accessing the cmd ublk_ctrl_cmd_dump() accesses (header *)sqe->cmd before IO_URING_F_SQE128 flag check. This could cause out of boundary memory access. Move the SQE128 flag check earlier in ublk_ctrl_uring_cmd() to return -EINVAL immediately if the flag is not set.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684
- https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8
- https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a
- https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67
- https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb
- https://git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec