CVE-2026-12246
CVE-2026-12246: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityHigh8.0
High [CVE-2026-12246] Out of bounds stack write with crafted APL RR
CVE-2026-12246Source published Source updated
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes. A flaw was found in NSD. A remote attacker, operating as a configured primary DNS server in a multi-tenant secondary DNS deployment, could exploit a bug involving specially crafted Address Prefix List (APL) resource records. This could lead to arbitrary code execution or a denial of service. This is an Important flaw in NSD, affecting multi-tenant secondary DNS deployments. The vulnerability requires the attacker to be a trusted primary, but the risk is significant in multi-tenant environments. This vulnerability doesn't affect any supported Red Hat…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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