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.
Affected products
linux: linux kernel
References6
- git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684 Patch
- git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8 Patch
- git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a Patch
- git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67 Patch
- git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb Patch
- git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 14 November 2026
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