Medium
Security advisory
An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-10756
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:26 UTC · Revision 1
Source evidence
An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.
osv:CVE-2020-10756
Complete source record
{
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"url": "https://osv.dev/vulnerability/CVE-2020-10756",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-10756",
"summary": "An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.",
"evidence": "osv:CVE-2020-10756",
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"modified": "2026-10-24T10:30:28.868226340Z",
"provider": "osv",
"references": [
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"https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html",
"https://security.netapp.com/advisory/ntap-20201001-0001/",
"https://usn.ubuntu.com/4437-1/",
"https://usn.ubuntu.com/4467-1/",
"https://www.debian.org/security/2020/dsa-4728",
"https://www.zerodayinitiative.com/advisories/ZDI-20-1005/",
"https://bugzilla.redhat.com/show_bug.cgi?id=1835986"
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},
"source_id": "core-osv",
"document_id": 432158,
"published_at": "2020-07-09T16:15:13.47+00:00"
}