Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Description
A security update for the aardvark-dns RPM package in Red Hat Enterprise Linux addresses a denial of service vulnerability triggered by truncated TCP DNS queries and connection resets. This vulnerability affects multiple architectures and versions of Red Hat Enterprise Linux 9 and 10. The issue is rated as moderate by Red Hat Product Security, and a patch is available to remediate it.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-35406 is a denial of service vulnerability in the aardvark-dns authoritative DNS server component used in Red Hat Enterprise Linux. The flaw allows an attacker to cause a denial of service via truncated TCP DNS queries and connection resets. The vulnerability affects Red Hat Enterprise Linux versions 9 (including extended update support releases) and 10 prior to 10.2 across multiple architectures including x86_64, aarch64, s390x, and ppc64le. Red Hat has released updated RPM packages (aardvark-dns-2.1.0-1.hum1) to fix this issue.
Potential Impact
Successful exploitation of this vulnerability can cause denial of service conditions in the aardvark-dns service, potentially disrupting DNS resolution for affected systems. There are no known exploits in the wild. The impact is limited to service availability rather than code execution or data compromise.
Mitigation Recommendations
A patch is available from Red Hat to address this vulnerability. Users should apply the updated aardvark-dns RPM packages as described in the Red Hat advisory RHSA-2026:36318. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:36318
- Cve Count
- 1
- State
- PUBLISHED
Threat ID: 6a4e4ee3c9d9e3dbe328969b
Added to database: 07/08/2026, 13:21:39 UTC
Last enriched: 10/06/2026, 22:07:02 UTC
Last updated: 10/06/2026, 22:07:02 UTC
Views: 126
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