CVE intelligence and bounded remediation

CVE-2019-3812 — Qemu Qemu security vulnerability

Medium CVSS 5.5

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Severity
Medium
CVSS
5.5 (3.0)
Published
2019-02-19
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-119, CWE-125

Affected products

  • qemu / qemu
  • fedoraproject / fedora / 29
  • fedoraproject / fedora / 30
  • canonical / ubuntu_linux / 18.04
  • canonical / ubuntu_linux / 18.10
  • opensuse / leap / 42.3

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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