VULNERABILITY INTELLIGENCE

CVE-2021-3595

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 tftp_input() function and could occur while processing a udp packet that is smaller than the size of the 'tftp_t' 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.

Weakness classification

  • secalert@redhat.com: CWE-824

Primary references