RHSA-2026:43236
Vulnerability from csaf_redhat - Published: 2026-07-22 06:01 - Updated: 2026-08-16 21:36Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
valkey:
* valkey-9.0.5-0.1.hum1 (aarch64, x86_64)
* valkey-compat-redis-9.0.5-0.1.hum1 (noarch)
* valkey-compat-redis-devel-9.0.5-0.1.hum1 (noarch)
* valkey-devel-9.0.5-0.1.hum1 (aarch64, x86_64)
* valkey-doc-9.0.5-0.1.hum1 (noarch)
* valkey-rdma-9.0.5-0.1.hum1 (aarch64, x86_64)
* valkey-9.0.5-0.1.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 Redis. An authenticated attacker, in an unusual configuration where they can execute the RESTORE command, could exploit a double free vulnerability. This occurs when a specially crafted RESTORE payload references the same NACK (pending entry) by multiple consumers, and both consumers are subsequently deleted via XGROUP DELCONSUMER. Successful exploitation of this flaw could lead to remote code execution.
7.5 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:valkey-main@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:valkey-main@noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:valkey-main@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:valkey-main@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in Redis. An adjacent unauthenticated attacker can exploit an out-of-bounds read vulnerability in the Redis Cluster Bus message parser by sending a specially crafted PING message. This vulnerability, specifically within the getPingExtLength() function, occurs because extension length fields are not properly validated against the allocated buffer size. Successful exploitation can lead to denial of service or information disclosure.
7.1 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:valkey-main@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:valkey-main@noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:valkey-main@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:valkey-main@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
References
21 references
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"title": "Vulnerability description"
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{
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"text": "redis: Redis: Remote Code Execution via specially crafted RESTORE payload",
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"title": "redis: Redis: Remote Code Execution via specially crafted RESTORE payload"
},
{
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"ids": [
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"title": "Vulnerability description"
},
{
"category": "summary",
"text": "redis: Redis: Denial of Service via Out-of-Bounds Read in Cluster Bus",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"url": "https://github.com/redis/redis"
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"url": "https://redis.io/"
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"product_ids": [
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"Red Hat Hardened Images:valkey-main@noarch",
"Red Hat Hardened Images:valkey-main@src",
"Red Hat Hardened Images:valkey-main@x86_64"
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"url": "https://access.redhat.com/errata/RHSA-2026:43236"
}
],
"scores": [
{
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"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:valkey-main@aarch64",
"Red Hat Hardened Images:valkey-main@noarch",
"Red Hat Hardened Images:valkey-main@src",
"Red Hat Hardened Images:valkey-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "redis: Redis: Denial of Service via Out-of-Bounds Read in Cluster Bus"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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