CVE-2026-45962
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.
Does this matter?
Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684Patch
- https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8Patch
- https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6aPatch
- https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67Patch
- https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bbPatch
- https://git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ecPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.