ublk: Validate SQE128 flag before accessing the cmd
Summary
| CVE | CVE-2026-45962 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 14:17:12 UTC |
| Updated | 2026-05-27 14:48:03 UTC |
| 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. |
Risk And Classification
EPSS: 0.000240000 probability, percentile 0.073320000 (date 2026-06-01)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 71f28f3136aff5890cd56de78abc673f8393cad9 4b4dff498f46e9802f71bc84258bf73065f51c6a git | Not specified |
| CNA | Linux | Linux | affected 71f28f3136aff5890cd56de78abc673f8393cad9 31cac6acf77ece488f29fb8f79589d9298e969c8 git | Not specified |
| CNA | Linux | Linux | affected 71f28f3136aff5890cd56de78abc673f8393cad9 dbe8e81a2ec608f87f79a34f6444cd62f6a243bb git | Not specified |
| CNA | Linux | Linux | affected 71f28f3136aff5890cd56de78abc673f8393cad9 f75a5555e0049e7857eae25b60aee98b80e287ec git | Not specified |
| CNA | Linux | Linux | affected 71f28f3136aff5890cd56de78abc673f8393cad9 17d33ba7291100008360b5a354962db37ad80684 git | Not specified |
| CNA | Linux | Linux | affected 71f28f3136aff5890cd56de78abc673f8393cad9 da7e4b75e50c087d2031a92f6646eb90f7045a67 git | Not specified |
| CNA | Linux | Linux | affected 6.0 | Not specified |
| CNA | Linux | Linux | unaffected 6.0 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.165 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.128 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.75 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.14 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.4 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.