{"api_version":"1","generated_at":"2026-11-11T17:03:41+00:00","cve":"CVE-2026-99225","urls":{"html":"https://cve.report/CVE-2026-99225","api":"https://cve.report/api/cve/CVE-2026-99225.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-99225","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99225"},"summary":{"title":"keys: Check the authorization payload in process keyring searches","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: Check the authorization payload in process keyring searches\n\nAn authorization payload and its saved credentials must remain valid\nwhile search_process_keyrings_rcu() searches the requestor's keyrings.\nThe function validates the authorization key, then separately loads\npayload.data[0] and unconditionally reads rka->cred. Validation does\nnot prevent request_key_auth_revoke() from clearing the payload.\n\nA request-key helper can assume authority and fork a descendant that\ninherits the authorization key. If the descendant misses in its own\nkeyrings, it falls back to the saved requestor credentials. Successful\ntarget instantiation invalidates the authorization key without clearing\nthe payload. After the helper exits, UMH_WAIT_PROC returns to the\nrequester, which calls complete_request_key() and revokes that key.\n\nWith the descendant paused after validation, the paths can interleave\nas follows:\n\n  1. The descendant enters search_process_keyrings_rcu() under RCU and\n     key_validate() succeeds.\n  2. The helper instantiates the target, invalidates the authorization\n     key, and exits.\n  3. The requester resumes from UMH_WAIT_PROC, calls\n     complete_request_key(), and revokes the authorization key.\n     request_key_auth_revoke() sets its payload pointer to NULL.\n  4. The descendant loads NULL and dereferences rka->cred.\n\nThis NULL dereference can oops the kernel. RCU delays payload disposal\nbut does not prevent the pointer from being cleared.\n\nLoad the payload with dereference_key_rcu() and require a non-NULL\nresult before validating the authorization key and searching its saved\ncredentials. A non-NULL payload and its credentials remain alive for\nthe caller's RCU read-side section; a cleared payload skips the fallback\nsearch and follows the existing error selection.\n\nKASAN report as below:\n\n    Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI\n    KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n    RIP: 0010:search_process_keyrings_rcu+0x32b/0x790","state":"PUBLISHED","assigner":"Linux","published_at":"2026-11-02 16:17:47","updated_at":"2026-11-03 20:18:28"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/26949c2e4c461e9e620e935bc22717f36a40b615","name":"https://git.kernel.org/stable/c/26949c2e4c461e9e620e935bc22717f36a40b615","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/49f4e768540d25d8852ef750313afda6a4774871","name":"https://git.kernel.org/stable/c/49f4e768540d25d8852ef750313afda6a4774871","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b4dfda438fee3c6faa15d9b421c373de6a0e476f","name":"https://git.kernel.org/stable/c/b4dfda438fee3c6faa15d9b421c373de6a0e476f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b86db7993051d05810601654e886a1e78e1fa495","name":"https://git.kernel.org/stable/c/b86db7993051d05810601654e886a1e78e1fa495","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7d3d2fffe933e538472ccafe5bbc7109488b9ce3","name":"https://git.kernel.org/stable/c/7d3d2fffe933e538472ccafe5bbc7109488b9ce3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/458cf9715af6aff3ac8d2ec60bd59e9d6236fd0f","name":"https://git.kernel.org/stable/c/458cf9715af6aff3ac8d2ec60bd59e9d6236fd0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/984a178d54515779a1bee100b92a6cee8777c830","name":"https://git.kernel.org/stable/c/984a178d54515779a1bee100b92a6cee8777c830","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0a0ec45bf577a9b4d4960567f20d3877ef480de9","name":"https://git.kernel.org/stable/c/0a0ec45bf577a9b4d4960567f20d3877ef480de9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/14fb6fad526b35a7ebd121f1dd313abe652e0aa6","name":"https://git.kernel.org/stable/c/14fb6fad526b35a7ebd121f1dd313abe652e0aa6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-99225","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99225","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 14fb6fad526b35a7ebd121f1dd313abe652e0aa6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 458cf9715af6aff3ac8d2ec60bd59e9d6236fd0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 7d3d2fffe933e538472ccafe5bbc7109488b9ce3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 26949c2e4c461e9e620e935bc22717f36a40b615 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 984a178d54515779a1bee100b92a6cee8777c830 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 b86db7993051d05810601654e886a1e78e1fa495 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 b4dfda438fee3c6faa15d9b421c373de6a0e476f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 49f4e768540d25d8852ef750313afda6a4774871 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e59428f721ee096d8a020504ea908a6f0d952735 0a0ec45bf577a9b4d4960567f20d3877ef480de9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.273 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.224 5.15.* 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":"99225","cve":"CVE-2026-99225","epss":"0.001650000","percentile":"0.057350000","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":["security/keys/process_keys.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"14fb6fad526b35a7ebd121f1dd313abe652e0aa6","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"458cf9715af6aff3ac8d2ec60bd59e9d6236fd0f","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"7d3d2fffe933e538472ccafe5bbc7109488b9ce3","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"26949c2e4c461e9e620e935bc22717f36a40b615","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"984a178d54515779a1bee100b92a6cee8777c830","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"b86db7993051d05810601654e886a1e78e1fa495","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"b4dfda438fee3c6faa15d9b421c373de6a0e476f","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"49f4e768540d25d8852ef750313afda6a4774871","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"},{"lessThan":"0a0ec45bf577a9b4d4960567f20d3877ef480de9","status":"affected","version":"e59428f721ee096d8a020504ea908a6f0d952735","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["security/keys/process_keys.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.273","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.224","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":"5.10.273","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.224","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.191","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.161","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.115","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.60","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.14","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3.1","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.4-rc1","versionStartIncluding":"5.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: Check the authorization payload in process keyring searches\n\nAn authorization payload and its saved credentials must remain valid\nwhile search_process_keyrings_rcu() searches the requestor's keyrings.\nThe function validates the authorization key, then separately loads\npayload.data[0] and unconditionally reads rka->cred. Validation does\nnot prevent request_key_auth_revoke() from clearing the payload.\n\nA request-key helper can assume authority and fork a descendant that\ninherits the authorization key. If the descendant misses in its own\nkeyrings, it falls back to the saved requestor credentials. Successful\ntarget instantiation invalidates the authorization key without clearing\nthe payload. After the helper exits, UMH_WAIT_PROC returns to the\nrequester, which calls complete_request_key() and revokes that key.\n\nWith the descendant paused after validation, the paths can interleave\nas follows:\n\n  1. The descendant enters search_process_keyrings_rcu() under RCU and\n     key_validate() succeeds.\n  2. The helper instantiates the target, invalidates the authorization\n     key, and exits.\n  3. The requester resumes from UMH_WAIT_PROC, calls\n     complete_request_key(), and revokes the authorization key.\n     request_key_auth_revoke() sets its payload pointer to NULL.\n  4. The descendant loads NULL and dereferences rka->cred.\n\nThis NULL dereference can oops the kernel. RCU delays payload disposal\nbut does not prevent the pointer from being cleared.\n\nLoad the payload with dereference_key_rcu() and require a non-NULL\nresult before validating the authorization key and searching its saved\ncredentials. A non-NULL payload and its credentials remain alive for\nthe caller's RCU read-side section; a cleared payload skips the fallback\nsearch and follows the existing error selection.\n\nKASAN report as below:\n\n    Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI\n    KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n    RIP: 0010:search_process_keyrings_rcu+0x32b/0x790"}],"providerMetadata":{"dateUpdated":"2026-11-03T19:12:58.334Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/14fb6fad526b35a7ebd121f1dd313abe652e0aa6"},{"url":"https://git.kernel.org/stable/c/458cf9715af6aff3ac8d2ec60bd59e9d6236fd0f"},{"url":"https://git.kernel.org/stable/c/7d3d2fffe933e538472ccafe5bbc7109488b9ce3"},{"url":"https://git.kernel.org/stable/c/26949c2e4c461e9e620e935bc22717f36a40b615"},{"url":"https://git.kernel.org/stable/c/984a178d54515779a1bee100b92a6cee8777c830"},{"url":"https://git.kernel.org/stable/c/b86db7993051d05810601654e886a1e78e1fa495"},{"url":"https://git.kernel.org/stable/c/b4dfda438fee3c6faa15d9b421c373de6a0e476f"},{"url":"https://git.kernel.org/stable/c/49f4e768540d25d8852ef750313afda6a4774871"},{"url":"https://git.kernel.org/stable/c/0a0ec45bf577a9b4d4960567f20d3877ef480de9"}],"title":"keys: Check the authorization payload in process keyring searches","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-99225","datePublished":"2026-11-02T16:06:34.759Z","dateReserved":"2026-09-25T10:25:14.402Z","dateUpdated":"2026-11-03T19:12:58.334Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-02 16:17:47","lastModifiedDate":"2026-11-03 20:18:28","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"99225","Ordinal":"1","Title":"keys: Check the authorization payload in process keyring searche","CVE":"CVE-2026-99225","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"99225","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nkeys: Check the authorization payload in process keyring searches\n\nAn authorization payload and its saved credentials must remain valid\nwhile search_process_keyrings_rcu() searches the requestor's keyrings.\nThe function validates the authorization key, then separately loads\npayload.data[0] and unconditionally reads rka->cred. Validation does\nnot prevent request_key_auth_revoke() from clearing the payload.\n\nA request-key helper can assume authority and fork a descendant that\ninherits the authorization key. If the descendant misses in its own\nkeyrings, it falls back to the saved requestor credentials. Successful\ntarget instantiation invalidates the authorization key without clearing\nthe payload. After the helper exits, UMH_WAIT_PROC returns to the\nrequester, which calls complete_request_key() and revokes that key.\n\nWith the descendant paused after validation, the paths can interleave\nas follows:\n\n  1. The descendant enters search_process_keyrings_rcu() under RCU and\n     key_validate() succeeds.\n  2. The helper instantiates the target, invalidates the authorization\n     key, and exits.\n  3. The requester resumes from UMH_WAIT_PROC, calls\n     complete_request_key(), and revokes the authorization key.\n     request_key_auth_revoke() sets its payload pointer to NULL.\n  4. The descendant loads NULL and dereferences rka->cred.\n\nThis NULL dereference can oops the kernel. RCU delays payload disposal\nbut does not prevent the pointer from being cleared.\n\nLoad the payload with dereference_key_rcu() and require a non-NULL\nresult before validating the authorization key and searching its saved\ncredentials. A non-NULL payload and its credentials remain alive for\nthe caller's RCU read-side section; a cleared payload skips the fallback\nsearch and follows the existing error selection.\n\nKASAN report as below:\n\n    Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI\n    KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n    RIP: 0010:search_process_keyrings_rcu+0x32b/0x790","Type":"Description","Title":"keys: Check the authorization payload in process keyring searche"}]}}}