CVE-2022-49659

In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits In commit 1be37d3b0414 ("can: m_can: fix periph RX path: use rx-offload to ensure skbs are sent from softirq context") the RX path for peripheral devices was switched to RX-offload. Received CAN frames are pushed to RX-offload together with a timestamp. RX-offload is designed to handle overflows of the timestamp correctly, if 32 bit timestamps are provided. The timestamps of m_can core are only 16 bits wide. So this patch shifts them to full 32 bit before passing them to RX-offload.

Score

CVSS 3.1 5.5 Medium

Status

Analyzed - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-02-26

Last modified

2026-05-11

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/2a2914a5bd7f38efe55a8372178146de82e0bce9
• https://git.kernel.org/stable/c/4c3333693f07313f5f0145a922f14a7d3c0f4f21
• https://git.kernel.org/stable/c/c7333f79888497bfd75dcd02a94eaf836dd1042c