CVE-2022-49727

ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

Published: 2/26/2025 Last updated: 10/1/2025 Reserved: 2/26/2025

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg When len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be overflow. To fix, we can follow what udpv6 does and subtract the transhdrlen from the max.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
3.1	5.5	Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (27)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes orun rawlink rawlink-eio rawlink-lwt shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (3)

Product	Vendor	Version
Linux	Linux	Windows 10 Version 1607 for x64-based Systems
Linux	Linux	ChakraCore
Linux	Linux	AR9380

CVE-2022-49727

ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

Metrics

Opam packages affected (27)

Products affected (3)

References (16)