OPENSUSE-SU-2021:0760-1
Vulnerability from csaf_opensuse - Published: 2021-05-22 05:03 - Updated: 2026-09-20 19:25Summary
Security update for lz4
Severity
Important
Notes
Title of the patch: Security update for lz4
Description of the patch: This update for lz4 fixes the following issues:
- CVE-2021-3520: Fixed memory corruption due to an integer overflow bug caused by memmove argument (bsc#1185438).
This update was imported from the SUSE:SLE-15:Update update project.
Patchnames: openSUSE-2021-760
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
8.6 (High)
Affected products
Recommended
7 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 15.2:liblz4-1-0:1.8.0-lp152.5.3.1.i586 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.2:liblz4-1-0:1.8.0-lp152.5.3.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.2:liblz4-1-32bit-0:1.8.0-lp152.5.3.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.2:liblz4-devel-0:1.8.0-lp152.5.3.1.i586 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.2:liblz4-devel-0:1.8.0-lp152.5.3.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.2:lz4-0:1.8.0-lp152.5.3.1.i586 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 15.2:lz4-0:1.8.0-lp152.5.3.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
important
References
8 references
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"category": "general",
"text": "There\u0027s a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.",
"title": "CVE description"
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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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