can iso-tp

About this tag
The can iso-tp tag on WindowsForum.com covers discussions about the Linux CAN ISO-TP (ISO 15765-2) protocol stack, particularly focusing on security vulnerabilities and kernel-level fixes. Recent content highlights CVE-2026-31474, a use-after-free bug in the isotp_sendmsg function caused by a race condition where the transmit buffer can be freed while still in use. The fix involves moving buffer deallocation to sk_destruct to ensure proper lifetime management. This tag is relevant for developers, system administrators, and security researchers working with Linux CAN networking, especially in automotive or embedded systems where ISO-TP is used for diagnostic communication over CAN bus.

  1. CVE-2026-31474: Fixing a Linux CAN ISO-TP Use-After-Free in isotp_sendmsg

    The Linux kernel’s CAN ISO-TP stack has a newly published security flaw, and while the CVE record is still being enriched, the underlying bug is already clear: a race in isotp_sendmsg can let so->tx.buf be freed while transmit code is still reading from it. Microsoft’s Security Update Guide has...
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    • can iso-tp linux kernel security socket lifetime fix use-after-free
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    • Forum: Security Alerts