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mptcp: fix slab-use-after-free in __inet_lookup_established

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-31669

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mptcp/protocol.c",
                        "net/mptcp/protocol.h",
                        "net/mptcp/subflow.c"
                    ],
                    "versions": [
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "f6e1f25fa5e733570f6d6fe37a4dfed2a0deba47",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "fb1f54b7d16f393b8b65d328410f78b4beea8fcc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "3fd6547f5b8ac99687be6d937a0321efda760597",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "eb9c6aeb512f877cf397deb1e4526f646c70e4a7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "15fa9ead4d5e6b6b9c794e84144146c917f2cb62",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "b313e9037d98c13938740e5ebda7852929366dff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b19bc2945b40b9fd38e835700907ffe8534ef0de",
                            "lessThan": "9b55b253907e7431210483519c5ad711a37dafa1",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/mptcp/protocol.c",
                        "net/mptcp/protocol.h",
                        "net/mptcp/subflow.c"
                    ],
                    "versions": [
                        {
                            "version": "5.12",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.12",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.203",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.169",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.135",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.82",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.23",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.13",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 8 Nov 21:05 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current