CVE-2026-27854
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Use after free when parsing EDNS options in Lua
An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
DNSdist
- Vendor
- PowerDNS
- Product
- DNSdist
- Platforms
- Unknown
- Default status
unaffected- Package
- dnsdist
- Package collection
- https://repo.powerdns.com/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1.9.0 | affected | semver | 1.9.12 | Unavailable | None listed |
| 2.0.0 | affected | semver | 2.0.3 | Unavailable | None listed |