Medium
Security advisory
A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the "Application menu" or "Window list" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-20315
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:12 UTC · Revision 1
Source evidence
A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the "Application menu" or "Window list" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.
osv:CVE-2021-20315
Complete source record
{
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"url": "https://osv.dev/vulnerability/CVE-2021-20315",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-20315",
"summary": "A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the \"Application menu\" or \"Window list\" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.",
"evidence": "osv:CVE-2021-20315",
"products": [],
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"aliases": [
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"modified": "2026-10-24T10:30:25.660755313Z",
"provider": "osv",
"references": [
"https://bugzilla.redhat.com/show_bug.cgi?id=2006285"
],
"provider_metadata": {
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{
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"related_cves": [
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"value": "CVE-2021-20315",
"evidence": "/id"
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"security_relevant": true,
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},
"source_id": "core-osv",
"document_id": 431415,
"published_at": "2022-02-18T18:15:08.8+00:00"
}