MediumFix available
screen — security advisory
socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
- Products
- screen
- Affected versions
- Not specified
- Fixed versions
- 4.8.0-r6, 4.9.0-r1, 4.9.0-r3
- CVEs
- CVE-2023-24626
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 14:55 UTC · Revision 1
Source evidence
socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
osv:ALPINE-CVE-2023-24626
screen
Fixed versions: 4.8.0-r6
screen
Fixed versions: 4.9.0-r1
screen
Fixed versions: 4.9.0-r1
screen
Fixed versions: 4.9.0-r3
screen
Fixed versions: 4.9.0-r3
screen
Fixed versions: 4.9.0-r3
screen
Fixed versions: 4.9.0-r3
screen
Fixed versions: 4.9.0-r3
screen
Fixed versions: 4.9.0-r3
screen
Fixed versions: 4.9.0-r3
Complete source record
{
"id": "82d0f8aa496d0ff46482e9f08f609b6415f06c8ac2f90131ac12d400738b4f23",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-24626",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2023-24626",
"summary": "socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.",
"evidence": "osv:ALPINE-CVE-2023-24626",
"products": [
{
"name": {
"value": "screen",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.8.0-r6",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.9.0-r1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
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},
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}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
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"evidence": "/affected/3/ranges"
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"affected_versions": []
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{
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},
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{
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"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "screen",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.9.0-r3",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "screen",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.9.0-r3",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ALPINE-CVE-2023-24626",
"aliases": [
"ALPINE-CVE-2023-24626"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.8.0-r6"
}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.15"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.9.0-r1"
}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.16"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.17"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
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}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.18"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.19"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.20"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
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}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
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"events": [
{
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},
{
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}
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}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.9.0-r3"
}
]
}
],
"package": {
"name": "screen",
"purl": "pkg:apk/alpine/screen?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-24626.json"
},
"ecosystem_specific": {}
}
],
"modified": "2026-10-26T17:17:58.612427253Z",
"provider": "osv",
"upstream": [
"CVE-2023-24626"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2023-24626"
]
},
"related_cves": [
{
"value": "CVE-2023-24626",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 454390,
"published_at": "2023-04-08T05:15:07.063+00:00"
}