{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68146",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.371Z",
        "datePublished": "2026-08-10T11:59:11.273Z",
        "dateUpdated": "2026-08-23T12:45:57.951Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-23T12:45:57.951Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Add global mutex to serialize trace_parser access\n\nIn ftrace, the trace_parser structure is allocated and initialized when\na trace file is opened, and is subsequently used across write and release\nhandlers to parse user input.\n\nThe affected handler paths and their specific functions are:\n  - Open paths: ftrace_regex_open(), ftrace_graph_open()\n  - Write paths: ftrace_regex_write(), ftrace_graph_write()\n  - Release paths: ftrace_regex_release(), ftrace_graph_release()\n\nIf userspace opens a trace file descriptor and shares it across multiple\nthreads, concurrent write calls will race on the parser's internal state,\nspecifically the 'idx', 'cont', and 'buffer' fields, leading to corrupted\ninput or undefined behavior.\n\nFix this by adding a global mutex, parser_lock, to serialize all access\nto trace_parser across write and release paths, preventing concurrent\ncorruption of parser state."
                }
            ],
            "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": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "a29bc20ea5f0cb79c6287f2c6182c5eeb8e6c01f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "db76744d588086695371ecdd982694395628ba48",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "1474fe4453505b6be720b5bb94be1c927de3314a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "3d0dd138a06c782f8b755cd1b6f9909494514ce1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "90be137813e1a5bdfd671e40fe28004fb959d3e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "65bf73bee1a4f3722208ae46afc0fa5de76b9a0a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "e807c9193d9493c7a0d039158ebb955050a76df1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "689fd8b65d669b96d612ccc37d6fb87bf7ed6907",
                            "lessThan": "7720b63bcef3f54c7fe288774b720a227d54a306",
                            "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": "2.6.32",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.32",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.266",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.217",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "2.6.32",
                                    "versionEndExcluding": "5.10.266"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "5.15.217"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "6.1.183"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
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                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "7.1.6"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.32",
                                    "versionEndExcluding": "7.2"
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                            ]
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a29bc20ea5f0cb79c6287f2c6182c5eeb8e6c01f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/db76744d588086695371ecdd982694395628ba48"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1474fe4453505b6be720b5bb94be1c927de3314a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3d0dd138a06c782f8b755cd1b6f9909494514ce1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/90be137813e1a5bdfd671e40fe28004fb959d3e4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/65bf73bee1a4f3722208ae46afc0fa5de76b9a0a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e807c9193d9493c7a0d039158ebb955050a76df1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7720b63bcef3f54c7fe288774b720a227d54a306"
                }
            ],
            "title": "ftrace: Add global mutex to serialize trace_parser access",
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}