RHSA-2026:7414
Vulnerability from csaf_redhat - Published: 2026-04-10 18:46 - Updated: 2026-04-20 21:32Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
c-ares:
* c-ares-1.34.6-3.1.hum1 (aarch64, x86_64)
* c-ares-devel-1.34.6-3.1.hum1 (aarch64, x86_64)
* c-ares-1.34.6-3.1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in c-ares. This vulnerability allows a Denial of Service (DoS) via terminating a query after maximum attempts when using `read_answer()` and `process_answer()` functions.
5.9 (Medium)
Vendor Fix
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://images.redhat.com/
https://access.redhat.com/errata/RHSA-2026:7414
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.
References
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"cwe": {
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"name": "Use After Free"
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"ids": [
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"notes": [
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"category": "description",
"text": "A flaw was found in c-ares. This vulnerability allows a Denial of Service (DoS) via terminating a query after maximum attempts when using `read_answer()` and `process_answer()` functions.",
"title": "Vulnerability description"
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{
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"text": "c-ares: c-ares: Denial of Service due to query termination after maximum attempts",
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"text": "This vulnerability is rated Moderate for Red Hat products. The flaw in c-ares can lead to a Denial of Service when the library is used to resolve queries, specifically when `read_answer()` and `process_answer()` functions are called and a query terminates after maximum attempts. This could impact applications that rely on c-ares for asynchronous DNS resolution.",
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"release_date": "2025-12-08T22:04:08.565000+00:00",
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{
"category": "vendor_fix",
"date": "2026-04-10T18:46:42+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
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"Red Hat Hardened Images:c-ares-main@src",
"Red Hat Hardened Images:c-ares-main@x86_64"
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
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"Red Hat Hardened Images:c-ares-main@src",
"Red Hat Hardened Images:c-ares-main@x86_64"
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}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "c-ares: c-ares: Denial of Service due to query termination after maximum attempts"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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