Bug 2517036 (CVE-2026-74455) - CVE-2026-74455 kernel: can: peak_usb: validate uCAN receive record lengths
Summary: CVE-2026-74455 kernel: can: peak_usb: validate uCAN receive record lengths
Keywords:
Status: NEW
Alias: CVE-2026-74455
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 12:46 UTC by OSIDB Bzimport
Modified: 2026-08-19 18:34 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-08-15 12:46:11 UTC 
In the Linux kernel, the following vulnerability has been resolved:

can: peak_usb: validate uCAN receive record lengths

pcan_usb_fd_decode_buf() walks uCAN records packed in one USB
receive buffer.

Require each record to contain the fixed header for its type, and verify
CAN payload bytes before copying them into the skb.
Comment 1 Mauro Matteo Cascella 2026-08-19 18:31:28 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081531-CVE-2026-74455-b371@gregkh/T
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