{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49420",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T02:08:31.568Z",
        "datePublished": "2025-02-26T02:12:44.316Z",
        "dateUpdated": "2026-05-23T15:22:12.638Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:22:12.638Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: annotate races around sk->sk_bound_dev_if\n\nUDP sendmsg() is lockless, and reads sk->sk_bound_dev_if while\nthis field can be changed by another thread.\n\nAdds minimal annotations to avoid KCSAN splats for UDP.\nFollowing patches will add more annotations to potential lockless readers.\n\nBUG: KCSAN: data-race in __ip6_datagram_connect / udpv6_sendmsg\n\nwrite to 0xffff888136d47a94 of 4 bytes by task 7681 on cpu 0:\n __ip6_datagram_connect+0x6e2/0x930 net/ipv6/datagram.c:221\n ip6_datagram_connect+0x2a/0x40 net/ipv6/datagram.c:272\n inet_dgram_connect+0x107/0x190 net/ipv4/af_inet.c:576\n __sys_connect_file net/socket.c:1900 [inline]\n __sys_connect+0x197/0x1b0 net/socket.c:1917\n __do_sys_connect net/socket.c:1927 [inline]\n __se_sys_connect net/socket.c:1924 [inline]\n __x64_sys_connect+0x3d/0x50 net/socket.c:1924\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nread to 0xffff888136d47a94 of 4 bytes by task 7670 on cpu 1:\n udpv6_sendmsg+0xc60/0x16e0 net/ipv6/udp.c:1436\n inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:652\n sock_sendmsg_nosec net/socket.c:705 [inline]\n sock_sendmsg net/socket.c:725 [inline]\n ____sys_sendmsg+0x39a/0x510 net/socket.c:2413\n ___sys_sendmsg net/socket.c:2467 [inline]\n __sys_sendmmsg+0x267/0x4c0 net/socket.c:2553\n __do_sys_sendmmsg net/socket.c:2582 [inline]\n __se_sys_sendmmsg net/socket.c:2579 [inline]\n __x64_sys_sendmmsg+0x53/0x60 net/socket.c:2579\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x2b/0x50 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nvalue changed: 0x00000000 -> 0xffffff9b\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 7670 Comm: syz-executor.3 Tainted: G        W         5.18.0-rc1-syzkaller-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n\nI chose to not add Fixes: tag because race has minor consequences\nand stable teams busy enough."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/ip.h",
                        "include/net/sock.h",
                        "net/ipv6/datagram.c",
                        "net/ipv6/udp.c"
                    ],
                    "versions": [
                        {
                            "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                            "lessThan": "20b2f61797873a2b18b5ff1a304ad2674fa1e0a5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                            "lessThan": "4c971d2f3548e4f11b1460ac048f5307e4b39fdb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.18.3",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "include/net/ip.h",
                        "include/net/sock.h",
                        "net/ipv6/datagram.c",
                        "net/ipv6/udp.c"
                    ],
                    "versions": [
                        {
                            "version": "5.18.3",
                            "lessThanOrEqual": "5.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionEndExcluding": "5.18.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionEndExcluding": "5.19"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/20b2f61797873a2b18b5ff1a304ad2674fa1e0a5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4c971d2f3548e4f11b1460ac048f5307e4b39fdb"
                }
            ],
            "title": "net: annotate races around sk->sk_bound_dev_if",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}