CVE-2026-74455
Description
A flaw was found in the Linux kernel's peak_usb Controller Area Network (CAN) driver. This vulnerability arises from insufficient validation of uCAN receive record lengths when processing data from a Universal Serial Bus (USB) receive buffer. A local attacker could potentially exploit this by sending specially crafted uCAN records, leading to memory corruption and potentially a denial of service.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Read Memory; Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of a program's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the program into an infinite loop.
Frequently Asked Questions
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