{"id":"USN-7894-2","aliases":[],"status":"published","title":"edk2 regression","description":"USN-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)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2025-11-28T14:58:41Z","modified":"2026-02-10T04:50:36Z","fixes":[{"ecosystem":"Ubuntu:22.04:LTS","package":"edk2","fixed_in":["2022.02-3ubuntu0.22.04.5"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"edk2","fixed_in":["2024.02-2ubuntu0.7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"edk2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2022.02-3ubuntu0.22.04.5"}]}],"versions":["2021.08~rc0-2","2021.08-3","2021.11~rc1-1","2021.11-1","2021.11-2","2022.02~rc1-1","2022.02~rc1-1ubuntu1","2022.02-1","2022.02-2","2022.02-3","2022.02-3ubuntu0.22.04.1","2022.02-3ubuntu0.22.04.2","2022.02-3ubuntu0.22.04.3","2022.02-3ubuntu0.22.04.4"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"edk2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2024.02-2ubuntu0.7"}]}],"versions":["2023.05-2","2023.11-2","2023.11-3","2023.11-4","2023.11-5","2023.11-6","2023.11-8","2024.02-1","2024.02-2","2024.02-2ubuntu0.1","2024.02-2ubuntu0.3","2024.02-2ubuntu0.4","2024.02-2ubuntu0.5","2024.02-2ubuntu0.6"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-7894-2","tags":["advisory"]},{"url":"https://launchpad.net/bugs/2133157","tags":["report"]}],"sources":{"osv":[{"id":"USN-7894-2","title":"edk2 regression","description":"USN-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)","status":"published","published":"2025-11-28T14:58:41Z","modified":"2026-02-10T04:50:36Z","updated_at":"2026-11-02T16:58:21.91885Z"}]}}