{"containers":{"cna":{"affected":[{"product":"Linux Kernel","vendor":"n/a","versions":[{"status":"affected","version":"Linux Kernel v5.4.54, Linux Kernel v5.4.66"}]}],"descriptions":[{"lang":"en","value":"An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11"}],"metrics":[{"cvssV3_0":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-908","description":"CWE-908: Use of Uninitialized Resource","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2022-07-25T16:24:43.000Z","orgId":"b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b","shortName":"talos"},"references":[{"tags":["x_refsource_MISC"],"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1243"},{"tags":["x_refsource_MISC"],"url":"https://www.oracle.com/security-alerts/cpujul2022.html"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"talos-cna@cisco.com","ID":"CVE-2021-21781","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Linux Kernel","version":{"version_data":[{"version_value":"Linux Kernel v5.4.54, Linux Kernel v5.4.66"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11"}]},"impact":{"cvss":{"baseScore":4,"baseSeverity":"Medium","vectorString":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-908: Use of Uninitialized Resource"}]}]},"references":{"reference_data":[{"name":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1243","refsource":"MISC","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1243"},{"name":"https://www.oracle.com/security-alerts/cpujul2022.html","refsource":"MISC","url":"https://www.oracle.com/security-alerts/cpujul2022.html"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T18:23:29.351Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2021-1243"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.oracle.com/security-alerts/cpujul2022.html"}]}]},"cveMetadata":{"assignerOrgId":"b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b","assignerShortName":"talos","cveId":"CVE-2021-21781","datePublished":"2021-08-18T14:37:46.000Z","dateReserved":"2021-01-04T00:00:00.000Z","dateUpdated":"2024-08-03T18:23:29.351Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}