Medium
Security advisory
A use-after-free vulnerability was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0 during the handling of the 'Information Transfer' command (CMD_TI). This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service or potential code execution with the privileges of the QEMU process.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-35506
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:46 UTC · Revision 1
Source evidence
A use-after-free vulnerability was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0 during the handling of the 'Information Transfer' command (CMD_TI). This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service or potential code execution with the privileges of the QEMU process.
osv:CVE-2020-35506
Complete source record
{
"id": "ffddd88ec00dc5acc158d8654ce0e44e104238f3f9690ad84600253dbd0ec61a",
"url": "https://osv.dev/vulnerability/CVE-2020-35506",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-35506",
"summary": "A use-after-free vulnerability was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0 during the handling of the 'Information Transfer' command (CMD_TI). This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service or potential code execution with the privileges of the QEMU process.",
"evidence": "osv:CVE-2020-35506",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-35506",
"aliases": [
"CVE-2020-35506"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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],
"modified": "2026-10-24T10:30:58.288427362Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/202208-27",
"https://security.netapp.com/advisory/ntap-20210713-0006/",
"https://www.openwall.com/lists/oss-security/2021/04/16/3",
"https://bugzilla.redhat.com/show_bug.cgi?id=1909996"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-35506",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439054,
"published_at": "2021-05-28T11:15:07.83+00:00"
}