{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-50452",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-09-17T14:53:07.011Z",
        "datePublished": "2025-10-01T11:45:25.394Z",
        "dateUpdated": "2026-05-11T19:19:44.873Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:19:44.873Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: cake: fix null pointer access issue when cake_init() fails\n\nWhen the default qdisc is cake, if the qdisc of dev_queue fails to be\ninited during mqprio_init(), cake_reset() is invoked to clear\nresources. In this case, the tins is NULL, and it will cause gpf issue.\n\nThe process is as follows:\nqdisc_create_dflt()\n\tcake_init()\n\t\tq->tins = kvcalloc(...)        --->failed, q->tins is NULL\n\t...\n\tqdisc_put()\n\t\t...\n\t\tcake_reset()\n\t\t\t...\n\t\t\tcake_dequeue_one()\n\t\t\t\tb = &q->tins[...]   --->q->tins is NULL\n\nThe following is the Call Trace information:\ngeneral protection fault, probably for non-canonical address\n0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nRIP: 0010:cake_dequeue_one+0xc9/0x3c0\nCall Trace:\n<TASK>\ncake_reset+0xb1/0x140\nqdisc_reset+0xed/0x6f0\nqdisc_destroy+0x82/0x4c0\nqdisc_put+0x9e/0xb0\nqdisc_create_dflt+0x2c3/0x4a0\nmqprio_init+0xa71/0x1760\nqdisc_create+0x3eb/0x1000\ntc_modify_qdisc+0x408/0x1720\nrtnetlink_rcv_msg+0x38e/0xac0\nnetlink_rcv_skb+0x12d/0x3a0\nnetlink_unicast+0x4a2/0x740\nnetlink_sendmsg+0x826/0xcc0\nsock_sendmsg+0xc5/0x100\n____sys_sendmsg+0x583/0x690\n___sys_sendmsg+0xe8/0x160\n__sys_sendmsg+0xbf/0x160\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\nRIP: 0033:0x7f89e5122d04\n</TASK>"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_cake.c"
                    ],
                    "versions": [
                        {
                            "version": "046f6fd5daefac7f5abdafb436b30f63bc7c602b",
                            "lessThan": "86aa1390898146f1de277bb6d2a8ed7fc7a43f12",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "046f6fd5daefac7f5abdafb436b30f63bc7c602b",
                            "lessThan": "bc8301ea7e7f1bb9d2ba2fcdf7b5ec2f0792b47e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "046f6fd5daefac7f5abdafb436b30f63bc7c602b",
                            "lessThan": "ae48bee2830bf216800e1447baca39541e27a12e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "046f6fd5daefac7f5abdafb436b30f63bc7c602b",
                            "lessThan": "154f4c06d9dbec1a14e91286c70b6305810302e0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "046f6fd5daefac7f5abdafb436b30f63bc7c602b",
                            "lessThan": "1dc0a019550fd38ec6cab2d73c90df2bd659c96b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "046f6fd5daefac7f5abdafb436b30f63bc7c602b",
                            "lessThan": "51f9a8921ceacd7bf0d3f47fa867a64988ba1dcb",
                            "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/sched/sch_cake.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.264",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.221",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.152",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.76",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.6",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "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": "4.19",
                                    "versionEndExcluding": "4.19.264"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.4.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.10.152"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.15.76"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.0.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/86aa1390898146f1de277bb6d2a8ed7fc7a43f12"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bc8301ea7e7f1bb9d2ba2fcdf7b5ec2f0792b47e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ae48bee2830bf216800e1447baca39541e27a12e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/154f4c06d9dbec1a14e91286c70b6305810302e0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1dc0a019550fd38ec6cab2d73c90df2bd659c96b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/51f9a8921ceacd7bf0d3f47fa867a64988ba1dcb"
                }
            ],
            "title": "net: sched: cake: fix null pointer access issue when cake_init() fails",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}