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CVE-2026-74458

UnknownEPSS 0.17%

Last modified

CVE-2026-74458 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.17%

6.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < c00ec53d7dec08134e97071850cc00ef000c5b77; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < d9e91672526ffa279709b15490118aea1bdee714; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < 72f96c2942f11a0ae8663adcb3d9ee986e07d4fa; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < 695aea154bb2d453e6daada1510972fafd075285; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < 3d0897ec623e422695d70d80ae456f89476c5328; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < 185cb1fa38142a3cbf223dd8b3abb24217f330d3; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < 21f0465fd86d77794aaed8e05f833634f68d178d; >= 080f40a6fa28dab299da7a652e444b1e2d9231e7, < 0293dd153f9dbc1ddf5dacdccc76b363bce4a8ee
LinuxLinux3.8

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74458?
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.
How severe is CVE-2026-74458?
Severity scoring for CVE-2026-74458 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74458?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST