OESA-2026-1641 (CVE-2026-4111)
Vulnerability from osv_openeuler – Published: 2026-03-20 11:10 – Updated: 2026-08-06 11:10 – Source website
VLAI
Summary
libarchive security update
Details
is an open-source BSD-licensed C programming library that provides streaming access to a variety of different archive formats, including tar, cpio, pax, zip, and ISO9660 images. The distribution also includes bsdtar and bsdcpio, full-featured implementations of tar and cpio that use .
Security Fix(es):
A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.(CVE-2026-4111)
Severity
7.5 (High)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"bsdcat-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp3.aarch64.rpm"
],
"noarch": [
"libarchive-help-3.7.1-10.oe2403sp3.noarch.rpm"
],
"src": [
"libarchive-3.7.1-10.oe2403sp3.src.rpm"
],
"x86_64": [
"bsdcat-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp3.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP3",
"name": "libarchive",
"purl": "pkg:rpm/openEuler/libarchive\u0026distro=openEuler-24.03-LTS-SP3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.7.1-10.oe2403sp3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"libarchive-3.4.3-13.oe2003sp4.aarch64.rpm",
"libarchive-debuginfo-3.4.3-13.oe2003sp4.aarch64.rpm",
"libarchive-debugsource-3.4.3-13.oe2003sp4.aarch64.rpm",
"libarchive-devel-3.4.3-13.oe2003sp4.aarch64.rpm"
],
"noarch": [
"libarchive-help-3.4.3-13.oe2003sp4.noarch.rpm"
],
"src": [
"libarchive-3.4.3-13.oe2003sp4.src.rpm"
],
"x86_64": [
"libarchive-3.4.3-13.oe2003sp4.x86_64.rpm",
"libarchive-debuginfo-3.4.3-13.oe2003sp4.x86_64.rpm",
"libarchive-debugsource-3.4.3-13.oe2003sp4.x86_64.rpm",
"libarchive-devel-3.4.3-13.oe2003sp4.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP4",
"name": "libarchive",
"purl": "pkg:rpm/openEuler/libarchive\u0026distro=openEuler-20.03-LTS-SP4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.3-13.oe2003sp4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"bsdcat-3.5.2-12.oe2203sp4.aarch64.rpm",
"bsdcpio-3.5.2-12.oe2203sp4.aarch64.rpm",
"bsdtar-3.5.2-12.oe2203sp4.aarch64.rpm",
"libarchive-3.5.2-12.oe2203sp4.aarch64.rpm",
"libarchive-debuginfo-3.5.2-12.oe2203sp4.aarch64.rpm",
"libarchive-debugsource-3.5.2-12.oe2203sp4.aarch64.rpm",
"libarchive-devel-3.5.2-12.oe2203sp4.aarch64.rpm"
],
"noarch": [
"libarchive-help-3.5.2-12.oe2203sp4.noarch.rpm"
],
"src": [
"libarchive-3.5.2-12.oe2203sp4.src.rpm"
],
"x86_64": [
"bsdcat-3.5.2-12.oe2203sp4.x86_64.rpm",
"bsdcpio-3.5.2-12.oe2203sp4.x86_64.rpm",
"bsdtar-3.5.2-12.oe2203sp4.x86_64.rpm",
"libarchive-3.5.2-12.oe2203sp4.x86_64.rpm",
"libarchive-debuginfo-3.5.2-12.oe2203sp4.x86_64.rpm",
"libarchive-debugsource-3.5.2-12.oe2203sp4.x86_64.rpm",
"libarchive-devel-3.5.2-12.oe2203sp4.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:22.03-LTS-SP4",
"name": "libarchive",
"purl": "pkg:rpm/openEuler/libarchive\u0026distro=openEuler-22.03-LTS-SP4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.2-12.oe2203sp4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"bsdcat-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp3.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp3.aarch64.rpm",
"bsdcat-3.7.1-10.oe2403.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403.aarch64.rpm",
"libarchive-3.7.1-10.oe2403.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403.aarch64.rpm",
"bsdcat-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdcat-3.7.1-10.oe2403sp2.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403sp2.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403sp2.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp2.aarch64.rpm"
],
"noarch": [
"libarchive-help-3.7.1-10.oe2403sp3.noarch.rpm",
"libarchive-help-3.7.1-10.oe2403.noarch.rpm",
"libarchive-help-3.7.1-10.oe2403sp1.noarch.rpm",
"libarchive-help-3.7.1-10.oe2403sp2.noarch.rpm"
],
"src": [
"libarchive-3.7.1-10.oe2403sp3.src.rpm",
"libarchive-3.7.1-10.oe2403.src.rpm",
"libarchive-3.7.1-10.oe2403sp1.src.rpm",
"libarchive-3.7.1-10.oe2403sp2.src.rpm"
],
"x86_64": [
"bsdcat-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp3.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp3.x86_64.rpm",
"bsdcat-3.7.1-10.oe2403.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403.x86_64.rpm",
"libarchive-3.7.1-10.oe2403.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403.x86_64.rpm",
"bsdcat-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdcat-3.7.1-10.oe2403sp2.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403sp2.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403sp2.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp2.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS",
"name": "libarchive",
"purl": "pkg:rpm/openEuler/libarchive\u0026distro=openEuler-24.03-LTS"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.7.1-10.oe2403sp2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"bsdcat-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403sp1.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp1.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp1.aarch64.rpm"
],
"noarch": [
"libarchive-help-3.7.1-10.oe2403sp1.noarch.rpm"
],
"src": [
"libarchive-3.7.1-10.oe2403sp1.src.rpm"
],
"x86_64": [
"bsdcat-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403sp1.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp1.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP1",
"name": "libarchive",
"purl": "pkg:rpm/openEuler/libarchive\u0026distro=openEuler-24.03-LTS-SP1"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.7.1-10.oe2403sp1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"bsdcat-3.7.1-10.oe2403sp2.aarch64.rpm",
"bsdcpio-3.7.1-10.oe2403sp2.aarch64.rpm",
"bsdtar-3.7.1-10.oe2403sp2.aarch64.rpm",
"bsdunzip-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp2.aarch64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp2.aarch64.rpm"
],
"noarch": [
"libarchive-help-3.7.1-10.oe2403sp2.noarch.rpm"
],
"src": [
"libarchive-3.7.1-10.oe2403sp2.src.rpm"
],
"x86_64": [
"bsdcat-3.7.1-10.oe2403sp2.x86_64.rpm",
"bsdcpio-3.7.1-10.oe2403sp2.x86_64.rpm",
"bsdtar-3.7.1-10.oe2403sp2.x86_64.rpm",
"bsdunzip-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-debuginfo-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-debugsource-3.7.1-10.oe2403sp2.x86_64.rpm",
"libarchive-devel-3.7.1-10.oe2403sp2.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP2",
"name": "libarchive",
"purl": "pkg:rpm/openEuler/libarchive\u0026distro=openEuler-24.03-LTS-SP2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.7.1-10.oe2403sp2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "is an open-source BSD-licensed C programming library that provides streaming access to a variety of different archive formats, including tar, cpio, pax, zip, and ISO9660 images. The distribution also includes bsdtar and bsdcpio, full-featured implementations of tar and cpio that use .\r\n\r\nSecurity Fix(es):\n\nA flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.(CVE-2026-4111)",
"id": "OESA-2026-1641",
"modified": "2026-08-06T11:10:40Z",
"published": "2026-03-20T11:10:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1641"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4111"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "libarchive security update",
"upstream": [
"CVE-2026-4111"
]
}
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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.
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.
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