{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49198",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-02-26T01:49:39.291Z",
        "datePublished": "2025-02-26T01:55:41.631Z",
        "dateUpdated": "2026-05-11T18:55:02.040Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T18:55:02.040Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Fix crash due to tcp_tsorted_anchor was initialized before release skb\n\nGot crash when doing pressure test of mptcp:\n\n===========================================================================\ndst_release: dst:ffffa06ce6e5c058 refcnt:-1\nkernel tried to execute NX-protected page - exploit attempt? (uid: 0)\nBUG: unable to handle kernel paging request at ffffa06ce6e5c058\nPGD 190a01067 P4D 190a01067 PUD 43fffb067 PMD 22e403063 PTE 8000000226e5c063\nOops: 0011 [#1] SMP PTI\nCPU: 7 PID: 7823 Comm: kworker/7:0 Kdump: loaded Tainted: G            E\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.2.1 04/01/2014\nCall Trace:\n ? skb_release_head_state+0x68/0x100\n ? skb_release_all+0xe/0x30\n ? kfree_skb+0x32/0xa0\n ? mptcp_sendmsg_frag+0x57e/0x750\n ? __mptcp_retrans+0x21b/0x3c0\n ? __switch_to_asm+0x35/0x70\n ? mptcp_worker+0x25e/0x320\n ? process_one_work+0x1a7/0x360\n ? worker_thread+0x30/0x390\n ? create_worker+0x1a0/0x1a0\n ? kthread+0x112/0x130\n ? kthread_flush_work_fn+0x10/0x10\n ? ret_from_fork+0x35/0x40\n===========================================================================\n\nIn __mptcp_alloc_tx_skb skb was allocated and skb->tcp_tsorted_anchor will\nbe initialized, in under memory pressure situation sk_wmem_schedule will\nreturn false and then kfree_skb. In this case skb->_skb_refdst is not null\nbecause_skb_refdst and tcp_tsorted_anchor are stored in the same mem, and\nkfree_skb will try to release dst and cause crash."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mptcp/protocol.c"
                    ],
                    "versions": [
                        {
                            "version": "289f2f58266777f45a52cd55dea96d736e6244c9",
                            "lessThan": "af61a8f7603926c26158153d0a0755764d82657c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f70cad1085d1e01d3ec73c1078405f906237feee",
                            "lessThan": "752add6f5ce5305e55d8bda4ac8d69be3a09f14d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f70cad1085d1e01d3ec73c1078405f906237feee",
                            "lessThan": "4d54181eba4b077fb74033a7186898ad4000a7a5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f70cad1085d1e01d3ec73c1078405f906237feee",
                            "lessThan": "3ef3905aa3b5b3e222ee6eb0210bfd999417a8cc",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mptcp/protocol.c"
                    ],
                    "versions": [
                        {
                            "version": "5.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.16.19",
                            "lessThanOrEqual": "5.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.17.2",
                            "lessThanOrEqual": "5.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.18",
                            "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:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "5.16.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "5.17.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "5.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/af61a8f7603926c26158153d0a0755764d82657c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/752add6f5ce5305e55d8bda4ac8d69be3a09f14d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4d54181eba4b077fb74033a7186898ad4000a7a5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3ef3905aa3b5b3e222ee6eb0210bfd999417a8cc"
                }
            ],
            "title": "mptcp: Fix crash due to tcp_tsorted_anchor was initialized before release skb",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}