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Solution
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Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. The fix is available in dnsmasq 2.93rc1 and later.
Tue, 23 Jun 2026 15:30:00 +0000
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| Metrics |
ssvc
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Tue, 23 Jun 2026 13:45:00 +0000
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| Description | 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-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. | |
| Title | Dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| Weaknesses | CWE-125 | |
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-06-23T15:04:49.622Z
Reserved: 2026-06-23T09:25:06.270Z
Link: CVE-2026-12969
Updated: 2026-06-23T15:02:27.275Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-06-23T20:15:04Z