{"id":"DEBIAN-CVE-2022-49420","details":"In the Linux kernel, the following vulnerability has been resolved:  net: annotate races around sk-\u003esk_bound_dev_if  UDP sendmsg() is lockless, and reads sk-\u003esk_bound_dev_if while this field can be changed by another thread.  Adds minimal annotations to avoid KCSAN splats for UDP. Following patches will add more annotations to potential lockless readers.  BUG: KCSAN: data-race in __ip6_datagram_connect / udpv6_sendmsg  write to 0xffff888136d47a94 of 4 bytes by task 7681 on cpu 0:  __ip6_datagram_connect+0x6e2/0x930 net/ipv6/datagram.c:221  ip6_datagram_connect+0x2a/0x40 net/ipv6/datagram.c:272  inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576  __sys_connect_file net/socket.c:1900 [inline]  __sys_connect+0x197/0x1b0 net/socket.c:1917  __do_sys_connect net/socket.c:1927 [inline]  __se_sys_connect net/socket.c:1924 [inline]  __x64_sys_connect+0x3d/0x50 net/socket.c:1924  do_syscall_x64 arch/x86/entry/common.c:50 [inline]  do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80  entry_SYSCALL_64_after_hwframe+0x44/0xae  read to 0xffff888136d47a94 of 4 bytes by task 7670 on cpu 1:  udpv6_sendmsg+0xc60/0x16e0 net/ipv6/udp.c:1436  inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:652  sock_sendmsg_nosec net/socket.c:705 [inline]  sock_sendmsg net/socket.c:725 [inline]  ____sys_sendmsg+0x39a/0x510 net/socket.c:2413  ___sys_sendmsg net/socket.c:2467 [inline]  __sys_sendmmsg+0x267/0x4c0 net/socket.c:2553  __do_sys_sendmmsg net/socket.c:2582 [inline]  __se_sys_sendmmsg net/socket.c:2579 [inline]  __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2579  do_syscall_x64 arch/x86/entry/common.c:50 [inline]  do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80  entry_SYSCALL_64_after_hwframe+0x44/0xae  value changed: 0x00000000 -\u003e 0xffffff9b  Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7670 Comm: syz-executor.3 Tainted: G        W         5.18.0-rc1-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011  I chose to not add Fixes: tag because race has minor consequences and stable teams busy enough.","modified":"2026-09-01T16:05:32.290947893Z","published":"2025-02-26T07:01:18.440Z","upstream":["CVE-2022-49420"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49420"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49420.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49420.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49420.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}