{"api_version":"1","generated_at":"2026-11-04T07:11:08+00:00","cve":"CVE-2026-99220","urls":{"html":"https://cve.report/CVE-2026-99220","api":"https://cve.report/api/cve/CVE-2026-99220.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-99220","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99220"},"summary":{"title":"asymmetric_keys: reject trust keys without IDs","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-11-02 16:17:46","updated_at":"2026-11-03 20:18:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7f0728ba89624e25df2bb80ff59bbfb545060935","name":"https://git.kernel.org/stable/c/7f0728ba89624e25df2bb80ff59bbfb545060935","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9695df3b1db4ac4534274d38ee16e3b9b0bf910e","name":"https://git.kernel.org/stable/c/9695df3b1db4ac4534274d38ee16e3b9b0bf910e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1aa0c7aa4c2554a5b6d74ae1924508ca4718234b","name":"https://git.kernel.org/stable/c/1aa0c7aa4c2554a5b6d74ae1924508ca4718234b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2a40bdd4409567de4c2a141ac66439dc238af752","name":"https://git.kernel.org/stable/c/2a40bdd4409567de4c2a141ac66439dc238af752","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/33a078f04e264eb71aa9f209cb334e4010123818","name":"https://git.kernel.org/stable/c/33a078f04e264eb71aa9f209cb334e4010123818","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/57e54b6939c6539d90a81c7e57531901d5991651","name":"https://git.kernel.org/stable/c/57e54b6939c6539d90a81c7e57531901d5991651","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/889a2293a95f6c2880bf73b67f9b0af23251a128","name":"https://git.kernel.org/stable/c/889a2293a95f6c2880bf73b67f9b0af23251a128","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-99220","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99220","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 889a2293a95f6c2880bf73b67f9b0af23251a128 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 7f0728ba89624e25df2bb80ff59bbfb545060935 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 2a40bdd4409567de4c2a141ac66439dc238af752 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 1aa0c7aa4c2554a5b6d74ae1924508ca4718234b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 33a078f04e264eb71aa9f209cb334e4010123818 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 57e54b6939c6539d90a81c7e57531901d5991651 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c58b2362ba828ee2970c66c6a6fd7b04fde4413 9695df3b1db4ac4534274d38ee16e3b9b0bf910e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.20","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.191 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.161 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.115 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.60 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.14 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3.1 7.3.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.4-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"99220","cve":"CVE-2026-99220","epss":"0.001150000","percentile":"0.015650000","score_date":"2026-11-03","updated_at":"2026-11-04 00:14:34"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["crypto/asymmetric_keys/restrict.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"889a2293a95f6c2880bf73b67f9b0af23251a128","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"},{"lessThan":"7f0728ba89624e25df2bb80ff59bbfb545060935","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"},{"lessThan":"2a40bdd4409567de4c2a141ac66439dc238af752","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"},{"lessThan":"1aa0c7aa4c2554a5b6d74ae1924508ca4718234b","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"},{"lessThan":"33a078f04e264eb71aa9f209cb334e4010123818","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"},{"lessThan":"57e54b6939c6539d90a81c7e57531901d5991651","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"},{"lessThan":"9695df3b1db4ac4534274d38ee16e3b9b0bf910e","status":"affected","version":"3c58b2362ba828ee2970c66c6a6fd7b04fde4413","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["crypto/asymmetric_keys/restrict.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.20"},{"lessThan":"4.20","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.191","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.161","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.115","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.60","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.14","versionType":"semver"},{"lessThanOrEqual":"7.3.*","status":"unaffected","version":"7.3.1","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.4-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.191","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.161","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.115","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.60","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.14","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3.1","versionStartIncluding":"4.20","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.4-rc1","versionStartIncluding":"4.20","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-11-03T19:12:54.971Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-99220","datePublished":"2026-11-02T16:06:31.966Z","dateReserved":"2026-09-25T10:25:14.401Z","dateUpdated":"2026-11-03T19:12:54.971Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-02 16:17:46","lastModifiedDate":"2026-11-03 20:18:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"99220","Ordinal":"1","Title":"asymmetric_keys: reject trust keys without IDs","CVE":"CVE-2026-99220","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"99220","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"asymmetric_keys: reject trust keys without IDs"}]}}}