HighFix available
busybox — security advisory
A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_i function
- Products
- busybox
- Affected versions
- Not specified
- Fixed versions
- 1.31.1-r11, 1.31.1-r21, 1.32.1-r7, 1.33.1-r6, 1.34.0-r0
- CVEs
- CVE-2021-42378
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:07 UTC · Revision 1
Source evidence
A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_i function
osv:ALPINE-CVE-2021-42378
busybox
Fixed versions: 1.31.1-r11
busybox
Fixed versions: 1.31.1-r21
busybox
Fixed versions: 1.32.1-r7
busybox
Fixed versions: 1.33.1-r6
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
busybox
Fixed versions: 1.34.0-r0
Complete source record
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"modified": "2026-10-23T17:17:56.218897120Z",
"provider": "osv",
"upstream": [
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"references": [
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},
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"source_id": "core-osv",
"document_id": 415577,
"published_at": "2021-11-15T21:15:07.753+00:00"
}