CVE-2026-45962

MediumCVSS 5.5/10Last modified Jun 17, 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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 71f28f3136aff5890cd56de78abc673f8393cad9, < 4b4dff498f46e9802f71bc84258bf73065f51c6a; >= 71f28f3136aff5890cd56de78abc673f8393cad9, < 31cac6acf77ece488f29fb8f79589d9298e969c8; >= 71f28f3136aff5890cd56de78abc673f8393cad9, < dbe8e81a2ec608f87f79a34f6444cd62f6a243bb; >= 71f28f3136aff5890cd56de78abc673f8393cad9, < f75a5555e0049e7857eae25b60aee98b80e287ec; >= 71f28f3136aff5890cd56de78abc673f8393cad9, < 17d33ba7291100008360b5a354962db37ad80684; >= 71f28f3136aff5890cd56de78abc673f8393cad9, < da7e4b75e50c087d2031a92f6646eb90f7045a67
LinuxLinux6.0

References

Timeline

Published
May 27, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2026-45962: Medium severity, CVSS 5.5 | Vulnix