{"id":"CVE-2025-39702","revision":"075da45af24d41269571f5c5fd10a2aa","records":[{"revision":"075da45af24d41269571f5c5fd10a2aa","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-39702","aliases":[],"title":"ipv6: sr: Fix MAC comparison to be constant-time","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: sr: Fix MAC comparison to be constant-time\n\nTo prevent timing attacks, MACs need to be compared in constant time.\nUse the appropriate helper function for this.","state":0,"publishedAt":"2025-09-05T17:21:08.674+00:00","modifiedAt":"2026-10-15T22:02:30.641+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ipv6/seg6_hmac.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"ff55a452d56490047f5233cc48c5d933f8586884\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"86b6d34717fe0570afce07ee79b8eeb40341f831\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"b3967c493799e63f648e9c7b6cb063aa2aed04e7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"f7878d47560d61e3f370aca3cebb8f42a55b990a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bf355b8d2c30a289232042cacc1cfaea4923936c\",\n                            \"lessThan\": \"a458b2902115b26a25d67393b12ddd57d1216aaa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ipv6/seg6_hmac.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.249\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.190\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.149\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.103\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.44\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16.4\",\n                            \"lessThanOrEqual\": \"6.16.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/ff55a452d56490047f5233cc48c5d933f8586884","https://git.kernel.org/stable/c/3b348c9c8d2ca2c67559ffd0e258ae7e1107d4f0","https://git.kernel.org/stable/c/86b6d34717fe0570afce07ee79b8eeb40341f831","https://git.kernel.org/stable/c/3ddd55cf19ed6cc62def5e3af10c2a9df1b861c3","https://git.kernel.org/stable/c/b3967c493799e63f648e9c7b6cb063aa2aed04e7","https://git.kernel.org/stable/c/f7878d47560d61e3f370aca3cebb8f42a55b990a","https://git.kernel.org/stable/c/a458b2902115b26a25d67393b12ddd57d1216aaa"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39702","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-39702","identifiers":["CVE-2025-39702"]},"retained":false,"historicalAffected":[]}],"coverage":[]}