CVE-2026-45962

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux71f28f3136aff5890cd56de78abc673f8393cad9 < 4b4dff498f46e9802f71bc84258bf73065f51c6aaffected
LinuxLinux71f28f3136aff5890cd56de78abc673f8393cad9 < 31cac6acf77ece488f29fb8f79589d9298e969c8affected
LinuxLinux71f28f3136aff5890cd56de78abc673f8393cad9 < dbe8e81a2ec608f87f79a34f6444cd62f6a243bbaffected
LinuxLinux71f28f3136aff5890cd56de78abc673f8393cad9 < f75a5555e0049e7857eae25b60aee98b80e287ecaffected
LinuxLinux71f28f3136aff5890cd56de78abc673f8393cad9 < 17d33ba7291100008360b5a354962db37ad80684affected
LinuxLinux71f28f3136aff5890cd56de78abc673f8393cad9 < da7e4b75e50c087d2031a92f6646eb90f7045a67affected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.14 <= 6.18.*unaffected
LinuxLinux6.19.4 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References