CVE-2026-45962ublk: Validate SQE128 flag before accessing the cmd
- 5.5MediumCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 95% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 71f28f3136aff5890cd56de78abc673f8393cad9 – < 4b4dff498f46e9802f71bc84258bf73065f51c6a
- affected 71f28f3136aff5890cd56de78abc673f8393cad9 – < 31cac6acf77ece488f29fb8f79589d9298e969c8
- affected 71f28f3136aff5890cd56de78abc673f8393cad9 – < dbe8e81a2ec608f87f79a34f6444cd62f6a243bb
- affected 71f28f3136aff5890cd56de78abc673f8393cad9 – < f75a5555e0049e7857eae25b60aee98b80e287ec
- affected 71f28f3136aff5890cd56de78abc673f8393cad9 – < 17d33ba7291100008360b5a354962db37ad80684
- affected 71f28f3136aff5890cd56de78abc673f8393cad9 – < da7e4b75e50c087d2031a92f6646eb90f7045a67
- affected 6.0
- unaffected < 6.0
- unaffected 6.1.165 – ≤ 6.1.*
- unaffected 6.6.128 – ≤ 6.6.*
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.14 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References6
- https://git.kernel.org/stable/c/4b4dff498f46e9802f71bc84258bf73065f51c6a (opens in a new tab)
- https://git.kernel.org/stable/c/31cac6acf77ece488f29fb8f79589d9298e969c8 (opens in a new tab)
- https://git.kernel.org/stable/c/dbe8e81a2ec608f87f79a34f6444cd62f6a243bb (opens in a new tab)
- https://git.kernel.org/stable/c/f75a5555e0049e7857eae25b60aee98b80e287ec (opens in a new tab)
- https://git.kernel.org/stable/c/17d33ba7291100008360b5a354962db37ad80684 (opens in a new tab)
- https://git.kernel.org/stable/c/da7e4b75e50c087d2031a92f6646eb90f7045a67 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32246 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-45962)Record last updated .