{"id":"CVE-2026-12969","title":"An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c","summary":"An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-lengt…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-125"],"vendor":"thekelleys","product":"dnsmasq","affected":["enterprise_linux = 10.0","dnsmasq < 2.93"],"patched":["dnsmasq 2.93"],"published":"2026-06-23","updated":"2026-08-21","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-12969","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-12969","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491663","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.004,"epssPercentile":0.33931,"ingestedAt":"2026-08-22T13:32:35.399Z","slug":"CVE-2026-12969","body":"## Overview\n\nAn out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.\n\n## Affected\n\n- `enterprise_linux = 10.0`\n- `dnsmasq < 2.93`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `dnsmasq 2.93`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}