CVE-2026-74458can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% 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: can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents The wait and bulk receive paths walk variable-length commands from a USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be dispatched, and the wait path copies a matching command into a fixed caller-owned struct kvaser_cmd using the device-provided length. Reject nonzero commands that do not contain the fixed header or that extend beyond the current USB buffer item. In the wait path, also reject a matching command that exceeds the destination before copying it.
Timeline
ID reserved
By Linux
Published
- 3 months later
· 3 months later
Record updated
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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < c00ec53d7dec08134e97071850cc00ef000c5b77
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < d9e91672526ffa279709b15490118aea1bdee714
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < 72f96c2942f11a0ae8663adcb3d9ee986e07d4fa
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < 695aea154bb2d453e6daada1510972fafd075285
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < 3d0897ec623e422695d70d80ae456f89476c5328
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < 185cb1fa38142a3cbf223dd8b3abb24217f330d3
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < 21f0465fd86d77794aaed8e05f833634f68d178d
- affected 080f40a6fa28dab299da7a652e444b1e2d9231e7 – < 0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee
- affected 3.8
- unaffected < 3.8
- unaffected 5.10.265 – ≤ 5.10.*
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.151 – ≤ 6.6.*
- unaffected 6.12.103 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/c00ec53d7dec08134e97071850cc00ef000c5b77 (opens in a new tab)
- https://git.kernel.org/stable/c/d9e91672526ffa279709b15490118aea1bdee714 (opens in a new tab)
- https://git.kernel.org/stable/c/72f96c2942f11a0ae8663adcb3d9ee986e07d4fa (opens in a new tab)
- https://git.kernel.org/stable/c/695aea154bb2d453e6daada1510972fafd075285 (opens in a new tab)
- https://git.kernel.org/stable/c/3d0897ec623e422695d70d80ae456f89476c5328 (opens in a new tab)
- https://git.kernel.org/stable/c/185cb1fa38142a3cbf223dd8b3abb24217f330d3 (opens in a new tab)
- https://git.kernel.org/stable/c/21f0465fd86d77794aaed8e05f833634f68d178d (opens in a new tab)
- https://git.kernel.org/stable/c/0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee (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-2026-59651 (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-2026-74458)Record last updated .