CVE-2023-52887

Summary

In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new This patch enhances error handling in scenarios with RTS (Request to Send) messages arriving closely. It replaces the less informative WARN_ON_ONCE backtraces with a new error handling method. This provides clearer error messages and allows for the early termination of problematic sessions. Previously, sessions were only released at the end of j1939_xtp_rx_rts(). Potentially this could be reproduced with something like: testj1939 -r vcan0:0x80 & while true; do # send first RTS cansend vcan0 18EC8090#1014000303002301; # send second RTS cansend vcan0 18EC8090#1014000303002301; # send abort cansend vcan0 18EC8090#ff00000000002301; done

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/0bc0a7416ea73f79f915c9a05ac0858dff65cfed ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/0bc0a7416ea73f79f915c9a05ac0858dff65cfedPatch
• https://git.kernel.org/stable/c/1762ca80c2b72dd1b5821c5e347713ae696276eaPatch
• https://git.kernel.org/stable/c/177e33b655d35d72866b50aec84307119dc5f3d4Patch
• https://git.kernel.org/stable/c/26b18dd30e63d4fd777be429148e8e4ed66f60b2Patch
• https://git.kernel.org/stable/c/d3e2904f71ea0fe7eaff1d68a2b0363c888ea0fbPatch
• https://git.kernel.org/stable/c/ed581989d7ea9df6f8646beba2341e32cd49a1f9Patch
• https://git.kernel.org/stable/c/f6c839e717901dbd6b1c1ca807b6210222eb70f6Patch