Xen Security Advisory 513 v3 (CVE-2026-79605,CVE-2026-79606) - Out-of-bounds accesses in Tapdisk

As cited

Copy frozen at 2026-09-08 18:07 UTC (site build).

vulnerabilities

Xen Security Advisory 513 v3 (CVE-2026-79605,CVE-2026-79606) - Out-of-bounds accesses in Tapdisk

Xen published Security Advisory 513 version 3, disclosing out-of-bounds access vulnerabilities in Tapdisk, the userspace implementation of xen-blkback used by the XAPI toolstack. The advisory documents incorrect bounds checks in Tapdisk, now released publicly.

Why it matters: Organizations running Xen hypervisors with XAPI toolstack and Tapdisk are exposed to memory access vulnerabilities (CVE-2026-79605, CVE-2026-79606) that could enable privilege escalation or denial of service; review and patch Tapdisk immediately.

Source published

2026-09-08 15:44 UTC

First seen by Cybersecurity Tracker

2026-09-08 16:31 UTC