Medium
busybox — security advisory
BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.
- Products
- busybox
- Affected versions
- 1:1.20.0-8.1ubuntu1, 1:1.20.0-9ubuntu1, 1:1.20.0-9ubuntu2, 1:1.21.0-1ubuntu1, 1:1.21.0-1ubuntu1.4, 1:1.21.0-1ubuntu1.4+esm1, 1:1.22.0-15ubuntu1, 1:1.22.0-15ubuntu1.4, 1:1.22.0-15ubuntu1.4+esm1, 1:1.22.0-15ubuntu1.4+esm2, 1:1.22.0-19ubuntu2, 1:1.27.2-1ubuntu3, 1:1.27.2-1ubuntu4, 1:1.27.2-2ubuntu2, 1:1.27.2-2ubuntu3, 1:1.27.2-2ubuntu3.1, 1:1.27.2-2ubuntu3.2, 1:1.27.2-2ubuntu3.3, 1:1.27.2-2ubuntu3.4, 1:1.27.2-2ubuntu3.4+esm1, 1:1.30.1-4ubuntu4, 1:1.30.1-4ubuntu5, 1:1.30.1-4ubuntu6, 1:1.30.1-4ubuntu6.1, 1:1.30.1-4ubuntu6.2, 1:1.30.1-4ubuntu6.3, 1:1.30.1-4ubuntu6.4, 1:1.30.1-4ubuntu6.5, 1:1.30.1-6ubuntu3, 1:1.30.1-7ubuntu1, 1:1.30.1-7ubuntu2, 1:1.30.1-7ubuntu3, 1:1.30.1-7ubuntu3.1, 1:1.36.1-3ubuntu1, 1:1.36.1-6ubuntu1, 1:1.36.1-6ubuntu3, 1:1.36.1-6ubuntu3.1, 1:1.37.0-10.1ubuntu2, 1:1.37.0-10.1ubuntu3, 1:1.37.0-4ubuntu1, 1:1.37.0-7ubuntu1, 1:1.38.0-3ubuntu1, 1:1.38.0-3ubuntu3, 1:1.38.0-3ubuntu4
- Fixed versions
- Not specified
- CVEs
- CVE-2026-88839
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:30 UTC · Revision 1
Source evidence
BusyBox passwd/group tokenize() references a stale endpoint pointer after trimming, causing an out-of-bounds write of heap pointers.
osv:UBUNTU-CVE-2026-88839
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
busybox
Fixed versions: Not specified
Complete source record
{
"id": "9703d3d6bfb5b3993d0050872f1ebf3b58c4ce57dbe0f4c5ecdd6fb7691405d0",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-88839",
"method": "structured",
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"title": "UBUNTU-CVE-2026-88839",
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{
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{
"value": "1:1.30.1-7ubuntu1",
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{
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{
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{
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},
{
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},
{
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}
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}
}
],
"modified": "2026-10-17T13:01:15.742702305Z",
"provider": "osv",
"upstream": [
"CVE-2026-88839"
],
"references": [
"https://ubuntu.com/security/CVE-2026-88839",
"https://www.cve.org/CVERecord?id=CVE-2026-88839",
"https://access.redhat.com/security/cve/CVE-2026-88839",
"https://bugzilla.redhat.com/show_bug.cgi?id=2531353"
]
},
"related_cves": [
{
"value": "CVE-2026-88839",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361417,
"published_at": "2026-09-23T18:17:00+00:00"
}