RHSA-2026:30333
Vulnerability from csaf_redhat - Published: 2026-06-26 17:19 - Updated: 2026-11-07 05:53Summary
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:
libarchive:
* bsdcat-3.8.8-2.hum1 (aarch64, x86_64)
* bsdcpio-3.8.8-2.hum1 (aarch64, x86_64)
* bsdtar-3.8.8-2.hum1 (aarch64, x86_64)
* bsdunzip-3.8.8-2.hum1 (aarch64, x86_64)
* libarchive-3.8.8-2.hum1 (aarch64, x86_64)
* libarchive-devel-3.8.8-2.hum1 (aarch64, x86_64)
* libarchive-3.8.8-2.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 double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.
7.5 (High)
Affected products
Fixed
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
References
11 references
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"vulnerabilities": [
{
"cve": "CVE-2026-14164",
"cwe": {
"id": "CWE-415",
"name": "Double Free"
},
"discovery_date": "2026-06-26T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2493411"
}
],
"notes": [
{
"category": "description",
"text": "A double free issue has been identified in libarchive\u0027s RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "libarchive: Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Product Security has assessed this CVE as 7.5 CVSS with Moderate security Impact. This assessment reflects the library\u0027s typical deployment within enterprise software, where libarchive is frequently embedded into automated, network-accessible services that receive and process archives originating from remote sources. In these environments, a specially crafted RAR5 archive may be delivered and processed automatically without requiring direct user interaction, allowing a remote attacker to trigger the vulnerability and cause the affected application or service processing the archive to terminate unexpectedly, resulting in a denial of service.\n\nFrom a standalone library perspective, however, the vulnerable code is only reached when an application opens and processes a crafted RAR5 archive. Evaluating libarchive in isolation, without considering downstream deployment models, the vulnerability more closely aligns with a CVSS score of 5.5-CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (Moderate), reflecting an Attack Vector of Local (AV:L) and User Interaction Required (UI:R). This is because the crafted archive must first be delivered to and processed by a local application before the vulnerable parsing logic is executed. \n\nRed Hat\u0027s assigned score instead reflects the operational deployment of libarchive in automated, network-facing workloads in downstream environment models rather than the standalone library in isolation.\n\n```\n\nThis vulnerability only affects libarchive releases that include support for the RAR5 archive format. RAR5 support was first introduced upstream in libarchive 3.4.0 (https://github.com/libarchive/libarchive/wiki/ReleaseNotes#libarchive-340). Earlier libarchive releases do not contain the vulnerable RAR5 parsing code and are therefore not affected.\n\nRed Hat Enterprise Linux 6, 7, and 8 ship Libarchive versions prior to v3.4.0 that do not include RAR5 support and are therefore not affected.\n\n```",
"title": "Statement"
},
{
"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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"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@src",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-14164"
},
{
"category": "external",
"summary": "RHBZ#2493411",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493411"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-14164",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-14164"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-14164",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14164"
},
{
"category": "external",
"summary": "https://github.com/libarchive/libarchive/issues/3069",
"url": "https://github.com/libarchive/libarchive/issues/3069"
},
{
"category": "external",
"summary": "https://github.com/libarchive/libarchive/pull/3071",
"url": "https://github.com/libarchive/libarchive/pull/3071"
}
],
"release_date": "2026-05-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-26T17:19:56+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": [
"Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@src",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:30333"
},
{
"category": "workaround",
"details": "No mitigation is currently available that meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability. Customers are advised to apply the appropriate security update once it becomes available.",
"product_ids": [
"Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@src",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcat-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdcpio-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdtar-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:bsdunzip-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@src",
"Red Hat Hardened Images:libarchive-0:3.8.8-2.hum1@x86_64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@aarch64",
"Red Hat Hardened Images:libarchive-devel-0:3.8.8-2.hum1@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "libarchive: Double-Free Vulnerability in RAR5 Decompression Logic via dangling filtered_buf pointer in init_unpack()"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.