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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-49659

can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1be37d3b0414e3db47f6fcba6c16286bbae0cb65 to < c7333f79888497bfd75dcd02a94eaf836dd1042caffected
  • 1be37d3b0414e3db47f6fcba6c16286bbae0cb65 to < 2a2914a5bd7f38efe55a8372178146de82e0bce9affected
  • 1be37d3b0414e3db47f6fcba6c16286bbae0cb65 to < 4c3333693f07313f5f0145a922f14a7d3c0f4f21affected

Linux Linux

Default version status: affected

  • 5.13affected
  • 0 to < 5.13unaffected
  • 5.15.54 to ≤ 5.15.*unaffected
  • 5.18.11 to ≤ 5.18.*unaffected
  • 5.19 to ≤ *unaffected

References