qemu — security advisory
A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.
- Products
- qemu
- Affected versions
- Not specified
- Fixed versions
- 1:5.2+dfsg-10
- CVEs
- CVE-2020-17380
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:28 UTC · Revision 1
Source evidence
A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.
osv:DEBIAN-CVE-2020-17380
qemu
Fixed versions: 1:5.2+dfsg-10
qemu
Fixed versions: 1:5.2+dfsg-10
qemu
Fixed versions: 1:5.2+dfsg-10
Complete source record
{
"id": "a084faf02cb2aafa2de5727d10f1c9a4855f9e7dbf2eb208ebad4437e2db1d12",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-17380",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-17380",
"summary": "A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.",
"evidence": "osv:DEBIAN-CVE-2020-17380",
"products": [
{
"name": {
"value": "qemu",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:5.2+dfsg-10",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "qemu",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:5.2+dfsg-10",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "qemu",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1:5.2+dfsg-10",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2020-17380",
"aliases": [
"DEBIAN-CVE-2020-17380"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:5.2+dfsg-10"
}
]
}
],
"package": {
"name": "qemu",
"purl": "pkg:deb/debian/qemu?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17380.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:5.2+dfsg-10"
}
]
}
],
"package": {
"name": "qemu",
"purl": "pkg:deb/debian/qemu?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17380.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:5.2+dfsg-10"
}
]
}
],
"package": {
"name": "qemu",
"purl": "pkg:deb/debian/qemu?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-17380.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:28.782504409Z",
"provider": "osv",
"upstream": [
"CVE-2020-17380"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-17380"
]
},
"related_cves": [
{
"value": "CVE-2020-17380",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452312,
"published_at": "2021-01-30T06:15:12.647+00:00"
}