Bug 2451219 (CVE-2026-23334)

Summary: CVE-2026-23334 kernel: can: usb: f81604: handle short interrupt urb messages properly
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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A flaw was found in the Linux kernel's `can: usb: f81604` module. This vulnerability arises when the system processes Universal Serial Bus (USB) interrupt request blocks (URBs) that are shorter than their expected length. Improper handling of these malformed messages could lead to unexpected system behavior or resource issues, potentially resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-03-25 11:05:21 UTC
In the Linux kernel, the following vulnerability has been resolved:

can: usb: f81604: handle short interrupt urb messages properly

If an interrupt urb is received that is not the correct length, properly
detect it and don't attempt to treat the data as valid.