{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-99220",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.401Z",
        "datePublished": "2026-11-02T16:06:31.966Z",
        "dateUpdated": "2026-11-03T19:12:54.971Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-11-03T19:12:54.971Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nasymmetric_keys: reject trust keys without IDs\n\nThe PKCS#8 parser deliberately leaves the asym_key_ids payload slot\nempty. key_or_keyring_common() unconditionally dereferences that slot\nwhen a PKCS#8 key is supplied to a key_or_keyring restriction. Both the\nplain and :chain forms reach this branch, allowing an unprivileged caller\nto trigger a NULL pointer dereference through KEYCTL_RESTRICT_KEYRING\nfollowed by add_key().\n\n Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:key_or_keyring_common (crypto/asymmetric_keys/restrict.c:205 crypto/asymmetric_keys/restrict.c:279)\n Call Trace:\n  <TASK>\n  __key_create_or_update (security/keys/key.c:884)\n  key_create_or_update (security/keys/key.c:1021)\n  __do_sys_add_key (security/keys/keyctl.c:134)\n  do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n  </TASK>\n Kernel panic - not syncing: Fatal exception\n\nReject an asymmetric restriction key without key IDs. A PKCS#8 private\nkey cannot identify the signer of a candidate certificate and is not a\nvalid trust anchor."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "crypto/asymmetric_keys/restrict.c"
                    ],
                    "versions": [
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "889a2293a95f6c2880bf73b67f9b0af23251a128",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "7f0728ba89624e25df2bb80ff59bbfb545060935",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "2a40bdd4409567de4c2a141ac66439dc238af752",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "1aa0c7aa4c2554a5b6d74ae1924508ca4718234b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "33a078f04e264eb71aa9f209cb334e4010123818",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "57e54b6939c6539d90a81c7e57531901d5991651",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3c58b2362ba828ee2970c66c6a6fd7b04fde4413",
                            "lessThan": "9695df3b1db4ac4534274d38ee16e3b9b0bf910e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "crypto/asymmetric_keys/restrict.c"
                    ],
                    "versions": [
                        {
                            "version": "4.20",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.20",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.161",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.115",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.60",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.14",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3.1",
                            "lessThanOrEqual": "7.3.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.4-rc1",
                            "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": "4.20",
                                    "versionEndExcluding": "6.1.191"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "6.6.161"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "6.12.115"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "6.18.60"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "7.2.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "7.3.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.20",
                                    "versionEndExcluding": "7.4-rc1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/889a2293a95f6c2880bf73b67f9b0af23251a128"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7f0728ba89624e25df2bb80ff59bbfb545060935"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2a40bdd4409567de4c2a141ac66439dc238af752"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1aa0c7aa4c2554a5b6d74ae1924508ca4718234b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/33a078f04e264eb71aa9f209cb334e4010123818"
                },
                {
                    "url": "https://git.kernel.org/stable/c/57e54b6939c6539d90a81c7e57531901d5991651"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9695df3b1db4ac4534274d38ee16e3b9b0bf910e"
                }
            ],
            "title": "asymmetric_keys: reject trust keys without IDs",
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}