Fedora 43 : xen (2026-a9ea805bc1)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a9ea805bc1 advisory. x86: DMs may cause mem leak by IRQ binding XSA-509, CVE-2026-62437 x86: improper handling of HVM emulation return codes XSA-510, CVE-2026-79602...

Fedora 44 : xen (2026-1d448c1d40)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-1d448c1d40 advisory. x86: DMs may cause mem leak by IRQ binding XSA-509, CVE-2026-62437 x86: improper handling of HVM emulation return codes XSA-510, CVE-2026-79602...

CVE-2026-79604

oxenstored: Unbounded accumulation of watches: Oxenstored maintains two datastructures about watches; one global trie, and one hashtable tracked per domain. When a xenbus reconnect is requested, watches are not cleared out of the global trie. A guest can cause unbounded memory usage in oxenstored...

oxenstored: Unbounded accumulation of watches

ISSUE DESCRIPTION Oxenstored maintains two datastructures about watches; one global trie, and one hashtable tracked per domain. When a xenbus reconnect is requested, watches are not cleared out of the global trie. IMPACT A guest can cause unbounded memory usage in oxenstored. This can lead to a...

UBUNTU-CVE-2026-79604

oxenstored: Unbounded accumulation of watches: Oxenstored maintains two datastructures about watches; one global trie, and one hashtable tracked per domain. When a xenbus reconnect is requested, watches are not cleared out of the global trie. A guest can cause unbounded memory usage in oxenstored...

PT-2026-95552

oxenstored: Unbounded accumulation of watches: Oxenstored maintains two datastructures about watches; one global trie, and one hashtable tracked per domain. When a xenbus reconnect is requested, watches are not cleared out of the global trie. A guest can cause unbounded memory usage in oxenstored...

PT-2026-88444

News: Xen published XSA-509 to 513 at 12:00 UTC. Worst is XSA-513 CVE-2026-79605/79606: a guest can run code in tapdisk as root in dom0. Also host DoS via PCI passthrough and oxenstored. Apply vendor Xen/XAPI patches now. https://t.co/CHBHEfTqbS...

CVE-2026-23556

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota...

CVE-2026-23556 oxenstored keeps quota related use counts across domain destruction

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota...

CVE-2026-23556

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota...

CVE-2026-23556

CVE-2026-23556 affects Xen oxenstored: when tearing down a domain, node data is cleaned but quota usage counts are leaked. On domain ID reuse, a new domain can create fewer nodes before being over quota. Impact is locally exploitable high-severity (CVSS 4.0 base 9.4, HIGH confidentiality, integri...

CVE-2026-23556 oxenstored keeps quota related use counts across domain destruction

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota...

CVE-2026-23556: Improper Preservation of Permissions

When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota...

Fedora 42 : xen (2026-0c9aff64a5)

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-0c9aff64a5 advisory. oxenstored keeps quota related use counts across domain destruction XSA-483, CVE-2026-23556 Xenstored DoS via XSRESETWATCHES command XSA-484,...

oxenstored keeps quota related use counts across domain destruction

ISSUE DESCRIPTION When oxenstored is tearing a domain down, the node data is cleaned up but the usage counts are leaked. When the domain ID is eventually reused, the new domain can create fewer nodes before beeing deemed to be over quota. IMPACT Over an extended period of time, new domains will b...

PT-2026-35870

Name of the Vulnerable Software and Affected Versions oxenstored affected versions not specified Description An issue occurs when tearing down a domain where node data is cleaned up, but usage counts are leaked. This leads to a situation where a new domain reusing the same domain ID may be deemed...

EUVD-2020-21850

Malware in sbrugna...

EUVD-2018-7348

Malware in sbrugna...

EUVD-2020-21854

Malware in sbrugna...

Linux Distros Unpatched Vulnerability : CVE-2022-42324

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Oxenstored 32-31 bit integer truncation issues Integers in Ocaml are 63 or 31 bits of signed precision. The Ocaml Xenbus library takes a C uint32t out of the ri...