🛡️ UBUNTU-CVE-2021-3593
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2021-06-15
Updated 2026-06-15
Modified 2026-06-02
Fix URL N/A

Affected Packages

Software From version Fixed in
libslirp — 4.6.1-1
qemu — 1:2.11+dfsg-1ubuntu7.37

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