{"schemaVersion":3,"id":"USN-7894-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"edk2 regression\n\nUSN-7894-1 fixed vulnerabilities in EDK II. The update introduced a\nregression in the UEFI network boot. This update reverts the corresponding\nfixes for CVE-2023-45236 and CVE-2023-45237 pending further investigation.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that EDK II was susceptible to a predictable TCP Initial\n Sequence Number. An attacker could possibly use this issue to gain\n unauthorized access. This issue only affected Ubuntu 22.04 LTS, and Ubuntu\n 24.04 LTS. (CVE-2023-45236, CVE-2023-45237)\n\n It was discovered that EDK II incorrectly handled S3 sleep. An attacker\n could possibly use this issue to cause a denial of service. This issue only\n affected Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2024-1298)\n\n It was discovered that the EDK II PE/COFF loader incorrectly handled\n certain memory operations. An attacker could possibly use this issue to\n cause a denial of service, obtain sensitive information, or execute\n arbitrary code. This issue only affected Ubuntu 22.04 LTS, and Ubuntu\n 24.04 LTS. (CVE-2024-38796)\n\n It was discovered that the EDK II PE image hashing function incorrectly\n handled certain memory operations. An attacker could possibly use this\n issue to cause a denial of service, or execute arbitrary code.\n (CVE-2024-38797)\n\n It was discovered that the EDK II BIOS incorrectly handled certain memory\n operations. An attacker could possibly use this issue to cause a denial of\n service. (CVE-2024-38805, CVE-2025-2295)\n\n It was discovered that EDK II incorrectly handled the enabling of MCE. An\n attacker could possibly use this issue to cause a denial of service, or\n execute arbitrary code. (CVE-2025-3770)\n\n It was discovered that the OpenSSL library embedded in EDK II contained\n multiple vulnerabilties. An attacker could possibly use these issues to\n cause a denial of service, obtain sensitive information, or execute\n arbitrary code. (CVE-2021-3712, CVE-2022-0778, CVE-2022-4304,\n CVE-2022-4450, CVE-2023-0215, CVE-2023-0286, CVE-2023-0464, CVE-2023-0465,\n CVE-2023-0466, CVE-2023-2650, CVE-2023-3446, CVE-2023-3817, CVE-2023-5678,\n CVE-2023-6237, CVE-2024-0727, CVE-2024-13176, CVE-2024-2511,\n CVE-2024-41996, CVE-2024-4741, CVE-2024-5535, CVE-2024-6119, CVE-2024-9143,\n CVE-2025-9232)","dates":{"published":"2025-11-28T14:58:41.000Z","modified":"2026-02-10T04:50:36.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"edk2","name":"edk2","label":"edk2","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/edk2","purlType":"deb","versions":[{"text":"< 2022.02-3ubuntu0.22.04.5","noFixRecorded":false,"fixedIn":null},{"text":"< 2024.02-2ubuntu0.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2022.02-3ubuntu0.22.04.5 | < 2024.02-2ubuntu0.7","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7894-2","label":"ubuntu.com/security/notices/USN-7894-2","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://launchpad.net/bugs/2133157","label":"launchpad.net/bugs/2133157","hostname":"launchpad.net","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2023-45236","CVE-2023-45237"]},"timeline":[{"kind":"published","date":"2025-11-28T14:58:41.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-10T04:50:36.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T04:10:19.053Z","stale":false,"partial":false}}