CVE-2022-4283 (GCVE-0-2022-4283)
Vulnerability from cvelistv5 – Published: 2022-12-14 00:00 – Updated: 2025-04-14 18:13
VLAI
EPSS
VEX
Summary
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 15:16 UTC
CWE
- use-after-free
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | xorg-x11-server |
Affected:
xorg-x11-server-1.20.4
|
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},
{
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},
{
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"tags": [
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],
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}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
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],
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},
{
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}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
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]
}
},
"redhat_vex": {
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"current_release_date": "2025-11-21T11:20:56+00:00",
"cve": "CVE-2022-4283",
"id": "CVE-2022-4283",
"initial_release_date": "2022-12-14T00:00:00+00:00",
"product_status:fixed": "837",
"product_status:known_affected": "9",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "xorg-x11-server: XkbGetKbdByName use-after-free",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-4283.json",
"version": "3"
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"current_release_date": "2026-09-02T02:13:33Z",
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"product_status:recommended": "303",
"source": "SUSE CSAF VEX",
"status": "interim",
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"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-4283.json",
"version": "45"
},
"vulnrichment": {
"containers": {
"adp": [
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5NELB7YDWRABYYBG4UPTHRBDTKJRV5M2/"
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{
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],
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{
"metrics": [
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{
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},
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],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DXDF2O5PPLE3SVAJJYUOSAD5QZ4TWQ2G/"
},
{
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},
{
"name": "DSA-5304",
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],
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},
{
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"tags": [
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z67QC4C3I2FI2WRFIUPEHKC36J362MLA/"
},
{
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]
}
},
"cveMetadata": {
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"assignerShortName": "redhat",
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"datePublished": "2022-12-14T00:00:00.000Z",
"dateReserved": "2022-12-05T00:00:00.000Z",
"dateUpdated": "2025-04-14T18:13:03.382Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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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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