{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49973",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-06-18T10:57:27.384Z",
        "datePublished": "2025-06-18T11:00:36.303Z",
        "dateUpdated": "2026-05-23T15:23:27.189Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:23:27.189Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nskmsg: Fix wrong last sg check in sk_msg_recvmsg()\n\nFix one kernel NULL pointer dereference as below:\n\n[  224.462334] Call Trace:\n[  224.462394]  __tcp_bpf_recvmsg+0xd3/0x380\n[  224.462441]  ? sock_has_perm+0x78/0xa0\n[  224.462463]  tcp_bpf_recvmsg+0x12e/0x220\n[  224.462494]  inet_recvmsg+0x5b/0xd0\n[  224.462534]  __sys_recvfrom+0xc8/0x130\n[  224.462574]  ? syscall_trace_enter+0x1df/0x2e0\n[  224.462606]  ? __do_page_fault+0x2de/0x500\n[  224.462635]  __x64_sys_recvfrom+0x24/0x30\n[  224.462660]  do_syscall_64+0x5d/0x1d0\n[  224.462709]  entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nIn commit 9974d37ea75f (\"skmsg: Fix invalid last sg check in\nsk_msg_recvmsg()\"), we change last sg check to sg_is_last(),\nbut in sockmap redirection case (without stream_parser/stream_verdict/\nskb_verdict), we did not mark the end of the scatterlist. Check the\nsk_msg_alloc, sk_msg_page_add, and bpf_msg_push_data functions, they all\ndo not mark the end of sg. They are expected to use sg.end for end\njudgment. So the judgment of '(i != msg_rx->sg.end)' is added back here."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/skmsg.c"
                    ],
                    "versions": [
                        {
                            "version": "293c53b7dbf9073cbcc488f938bc053ff4caeec0",
                            "lessThan": "de22cba333d8699ad77e79f862fe1320cb1284de",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1295dae30f30c3daa03005ed8958d44b17f037fd",
                            "lessThan": "10ee118a1756141f8e9c87aa7344ed12b41630a8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9974d37ea75f01b47d16072b5dad305bd8d23fcc",
                            "lessThan": "583585e48d965338e73e1eb383768d16e0922d73",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4674c0da448b546e390a981b819cd4af5cb16cf9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.18.18",
                            "lessThan": "5.19",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/core/skmsg.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15.61",
                            "lessThan": "5.15.66",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.19.2",
                            "lessThan": "5.19.8",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15.61",
                                    "versionEndExcluding": "5.15.66"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.19.2",
                                    "versionEndExcluding": "5.19.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.18.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/de22cba333d8699ad77e79f862fe1320cb1284de"
                },
                {
                    "url": "https://git.kernel.org/stable/c/10ee118a1756141f8e9c87aa7344ed12b41630a8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/583585e48d965338e73e1eb383768d16e0922d73"
                }
            ],
            "title": "skmsg: Fix wrong last sg check in sk_msg_recvmsg()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}