HighFix available
linux-lts — security advisory
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
- Products
- linux-lts
- Affected versions
- Not specified
- Fixed versions
- 6.1.27-r3
- CVEs
- CVE-2023-32233
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 14:57 UTC · Revision 1
Source evidence
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
osv:ALPINE-CVE-2023-32233
linux-lts
Fixed versions: 6.1.27-r3
linux-lts
Fixed versions: 6.1.27-r3
linux-lts
Fixed versions: 6.1.27-r3
linux-lts
Fixed versions: 6.1.27-r3
linux-lts
Fixed versions: 6.1.27-r3
linux-lts
Fixed versions: 6.1.27-r3
Complete source record
{
"id": "45cfe717ae1b270a4bcb5f3b9e738a21d83327213dfe3dfefae0cf1d1ec032d1",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-32233",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2023-32233",
"summary": "In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.",
"evidence": "osv:ALPINE-CVE-2023-32233",
"products": [
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"evidence": "/affected/0/package/name"
},
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"evidence": "/affected/0/ranges"
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"severity": "high",
"structured": {
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"aliases": [
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"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
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"package": {
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"ecosystem": "Alpine:v3.19"
},
"database_specific": {
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"package": {
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"ecosystem": "Alpine:v3.20"
},
"database_specific": {
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"package": {
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"ecosystem": "Alpine:v3.22"
},
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"package": {
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"ecosystem": "Alpine:v3.23"
},
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],
"modified": "2026-10-26T17:17:58.622884296Z",
"provider": "osv",
"upstream": [
"CVE-2023-32233"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2023-32233"
]
},
"related_cves": [
{
"value": "CVE-2023-32233",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 454433,
"published_at": "2023-05-08T20:15:20.267+00:00"
}