VULNERABILITY INTELLIGENCE

CVE-2021-3592

CVSS score3.8 LOW
EPSS probability0.33%
CISA KEVNot currently listed
Published2021-06-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Description

An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.

Weakness classification

  • secalert@redhat.com: CWE-824
  • nvd@nist.gov: CWE-824

Primary references