{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-31499",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-03-09T15:48:24.104Z",
        "datePublished": "2026-04-22T13:54:20.384Z",
        "dateUpdated": "2026-05-23T16:05:12.236Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T16:05:12.236Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix deadlock in l2cap_conn_del()\n\nl2cap_conn_del() calls cancel_delayed_work_sync() for both info_timer\nand id_addr_timer while holding conn->lock. However, the work functions\nl2cap_info_timeout() and l2cap_conn_update_id_addr() both acquire\nconn->lock, creating a potential AB-BA deadlock if the work is already\nexecuting when l2cap_conn_del() takes the lock.\n\nMove the work cancellations before acquiring conn->lock and use\ndisable_delayed_work_sync() to additionally prevent the works from\nbeing rearmed after cancellation, consistent with the pattern used in\nhci_conn_del()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bluetooth/l2cap_core.c"
                    ],
                    "versions": [
                        {
                            "version": "f87271d21dd4ee83857ca11b94e7b4952749bbae",
                            "lessThan": "f7f35a4f7fd574f5889bb2e4b397e14cbb83f6da",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ab4eedb790cae44313759b50fe47da285e2519d5",
                            "lessThan": "3f26ecbd9cde621dd94be7ef252c7210b965a5c7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ab4eedb790cae44313759b50fe47da285e2519d5",
                            "lessThan": "d008460de352e534f6721de829b093368564ec66",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ab4eedb790cae44313759b50fe47da285e2519d5",
                            "lessThan": "00fdebbbc557a2fc21321ff2eaa22fd70c078608",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "efc30877bd4bc85fefe98d80af60fafc86e5775e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "18ab6b6078fa8191ca30a3065d57bf35d5635761",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.12.20",
                            "lessThan": "6.12.88",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.84",
                            "lessThan": "6.7",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.13.8",
                            "lessThan": "6.14",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bluetooth/l2cap_core.c"
                    ],
                    "versions": [
                        {
                            "version": "6.14",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.14",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.88",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.21",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.11",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "6.12.20",
                                    "versionEndExcluding": "6.12.88"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.18.21"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "6.19.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "7.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.6.84"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.13.8"
                                }
                            ]
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f7f35a4f7fd574f5889bb2e4b397e14cbb83f6da"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3f26ecbd9cde621dd94be7ef252c7210b965a5c7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d008460de352e534f6721de829b093368564ec66"
                },
                {
                    "url": "https://git.kernel.org/stable/c/00fdebbbc557a2fc21321ff2eaa22fd70c078608"
                }
            ],
            "title": "Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del()",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}