Medium
quickjs — security advisory
A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.
- Products
- quickjs
- Affected versions
- 2021.03.27-1, 2021.03.27-1ubuntu0.1~esm1, 2024.01.13-5, 2025.04.26-1, 2025.04.26-1build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-3979
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:43 UTC · Revision 1
Source evidence
A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.
osv:UBUNTU-CVE-2026-3979
quickjs
Fixed versions: Not specified
quickjs
Fixed versions: Not specified
quickjs
Fixed versions: Not specified
quickjs
Fixed versions: Not specified
Complete source record
{
"id": "b7d36eca0a83e0435b62a1e720146039d73f50749d4b2d41949be16a37373382",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-3979",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2026-3979",
"summary": "A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.",
"evidence": "osv:UBUNTU-CVE-2026-3979",
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"modified": "2026-10-17T12:58:51.521488144Z",
"provider": "osv",
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"references": [
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"source_id": "core-osv",
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"published_at": "2026-03-12T04:16:00+00:00"
}