{"id":"CVE-2026-43384","summary":"net/tcp-ao: Fix MAC comparison to be constant-time","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tcp-ao: Fix MAC comparison to be constant-time\n\nTo prevent timing attacks, MACs need to be compared in constant\ntime.  Use the appropriate helper function for this.","modified":"2026-06-18T03:55:27.249692125Z","published":"2026-05-08T14:21:31.355Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43384.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/080b0e210088296dd50d6637c06c1db14246adfe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/67edfec516d30d3e62925c397be4a1e5185802fc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8be6ed64966da48b6c4726918f106c18742a5125"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a269cbdc442f8658bca35383e34b9d0b0ff95a1c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43384.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43384"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0a3a809089eb1d4a0a2fd0c16b520d603988c859"},{"fixed":"8be6ed64966da48b6c4726918f106c18742a5125"},{"fixed":"a269cbdc442f8658bca35383e34b9d0b0ff95a1c"},{"fixed":"080b0e210088296dd50d6637c06c1db14246adfe"},{"fixed":"67edfec516d30d3e62925c397be4a1e5185802fc"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43384.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43384.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}