CVE-2015-5261: Heap-based buffer overflow in SPICE before 0.12.6 allows guest OS users to read and write to arbitrary memo...

Security readout for executives and security teams

CVE-2015-5261 is a host-impacting flaw in SPICE before 0.12.6. A user inside a guest operating system could trigger a heap buffer overflow through QXL surface-creation commands, allowing reads and writes to host memory. This matters most for virtualization environments that permit untrusted or compromised guests. Exposure is likely limited to virtualization hosts using vulnerable SPICE/QXL display components, especially where guest users are untrusted or guest compromise is plausible. The bundle does not identify specific distributions, package names, or product versions beyond SPICE before 0.12.6. Prioritize remediation on virtualization hosts that run untrusted, third-party, or internet-exposed workloads. The business risk is host memory compromise from inside a guest, but urgency is lower where SPICE/QXL is absent or vendor-fixed packages are already installed. Mitigation focus: Upgrade SPICE to 0.12.6 or a vendor-fixed backported package.; Apply relevant Red Hat, Ubuntu, Debian, Gentoo, or Oracle advisories where applicable.; Reduce exposure of vulnerable SPICE/QXL paths for untrusted guests until patched..

Prepared

Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.