OPENSUSE-SU-2026:22039-1
Vulnerability from csaf_opensuse - Published: 2026-10-06 15:08 - Updated: 2026-10-08 18:03Summary
Security update for distribution
Severity
Important
Notes
Title of the patch: Security update for distribution
Description of the patch: This update for distribution fixes the following issue:
- CVE-2026-63209: github.com/klauspost/compress: signed integer overflow in s2.NewDict() allows an attacker to bypass
repeat index validation and cause a process crash (bsc#1283762).
Patchnames: openSUSE-Leap-16.0-1855
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
7.5 (High)
Affected products
Recommended
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 16.0:distribution-registry-0:3.1.1-160000.5.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:distribution-registry-0:3.1.1-160000.5.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:distribution-registry-0:3.1.1-160000.5.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:distribution-registry-0:3.1.1-160000.5.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
References
6 references
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"title": "Description of the patch"
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],
"category": "architecture",
"name": "ppc64le"
},
{
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"category": "product_family",
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],
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],
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},
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"vulnerabilities": [
{
"cve": "CVE-2026-63209",
"ids": [
{
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"text": "https://www.suse.com/security/cve/CVE-2026-63209"
}
],
"notes": [
{
"category": "general",
"text": "compress provides various compression algorithms. Prior to version 1.18.7, a signed integer overflow vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer arithmetic, crashing the process with SIGSEGV. This issue has been patched in version 1.18.7.",
"title": "CVE description"
}
],
"product_status": {
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"openSUSE Leap 16.0:distribution-registry-0:3.1.1-160000.5.1.aarch64",
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]
},
"references": [
{
"category": "external",
"summary": "CVE-2026-63209",
"url": "https://www.suse.com/security/cve/CVE-2026-63209"
},
{
"category": "external",
"summary": "SUSE Bug 1283531 for CVE-2026-63209",
"url": "https://bugzilla.suse.com/1283531"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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],
"scores": [
{
"cvss_v3": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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],
"threats": [
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"category": "impact",
"date": "2026-10-06T15:08:34Z",
"details": "important"
}
],
"title": "CVE-2026-63209"
}
]
}
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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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