CVE-2023-52887: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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

Affected products

• Linux Linux Kernel: from 5.4, before 5.4.279 (fixed in 5.4.279); from 5.5, before 5.10.221 (fixed in 5.10.221); from 5.11, before 5.15.162 (fixed in 5.15.162); from 5.16, before 6.1.97 (fixed in 6.1.97); from 6.2, before 6.6.37 (fixed in 6.6.37); from 6.7, before 6.9.8 (fixed in 6.9.8); …

Published 2024-07-29. Last modified 2026-08-04.