{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49802",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-05-01T14:05:17.225Z",
        "datePublished": "2025-05-01T14:09:30.308Z",
        "dateUpdated": "2026-05-11T19:07:04.562Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:07:04.562Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Fix null pointer dereference in ftrace_add_mod()\n\nThe @ftrace_mod is allocated by kzalloc(), so both the members {prev,next}\nof @ftrace_mode->list are NULL, it's not a valid state to call list_del().\nIf kstrdup() for @ftrace_mod->{func|module} fails, it goes to @out_free\ntag and calls free_ftrace_mod() to destroy @ftrace_mod, then list_del()\nwill write prev->next and next->prev, where null pointer dereference\nhappens.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000008\nOops: 0002 [#1] PREEMPT SMP NOPTI\nCall Trace:\n <TASK>\n ftrace_mod_callback+0x20d/0x220\n ? do_filp_open+0xd9/0x140\n ftrace_process_regex.isra.51+0xbf/0x130\n ftrace_regex_write.isra.52.part.53+0x6e/0x90\n vfs_write+0xee/0x3a0\n ? __audit_filter_op+0xb1/0x100\n ? auditd_test_task+0x38/0x50\n ksys_write+0xa5/0xe0\n do_syscall_64+0x3a/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nKernel panic - not syncing: Fatal exception\n\nSo call INIT_LIST_HEAD() to initialize the list member to fix this issue."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/ftrace.c"
                    ],
                    "versions": [
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "665b4c6648bf2b91f69b33817f4321cf4c3cafe9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "b5bfc61f541d3f092b13dedcfe000d86eb8e133c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "f715f31559b82e3f75ce047fa476de63d8107584",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "6a14828caddad0d989495a72af678adf60992704",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "1bea037a1abb23a6729bef36a2265a4565f5ea77",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "6e50eb4b1807017f6c2d5089064256ce2de8aef1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "673feb9d76ab3eddde7acfd94b206e321cfc90b9",
                            "lessThan": "19ba6c8af9382c4c05dc6a0a79af3013b9a35cd0",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/ftrace.c"
                    ],
                    "versions": [
                        {
                            "version": "4.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.13",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.300",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.267",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.225",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.156",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.80",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.10",
                            "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": "4.13",
                                    "versionEndExcluding": "4.14.300"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "4.19.267"
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                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.4.225"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
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                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "5.15.80"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.0.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.1"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/665b4c6648bf2b91f69b33817f4321cf4c3cafe9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b5bfc61f541d3f092b13dedcfe000d86eb8e133c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f715f31559b82e3f75ce047fa476de63d8107584"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6a14828caddad0d989495a72af678adf60992704"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1bea037a1abb23a6729bef36a2265a4565f5ea77"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6e50eb4b1807017f6c2d5089064256ce2de8aef1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/19ba6c8af9382c4c05dc6a0a79af3013b9a35cd0"
                }
            ],
            "title": "ftrace: Fix null pointer dereference in ftrace_add_mod()",
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}