258 matches found
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...
Xen: Xenstored DoS by unprivileged domain (XSA-481)
Any guest issuing a Xenstore command accessing a node using the illegal node path '/local/domain/', will crash xenstored due to a clobbered error indicator in xenstored when verifying the node path. Note that the crash is forced via a failing assert statement in xenstored. In case xenstored is...
CVE-2026-23557
A flaw was found in xenstored, a component of Xen. Any guest operating system can cause xenstored to crash by issuing an XSRESETWATCHES command within a transaction, leading to a denial of service DoS. This occurs due to an assertion assert triggering, which can halt the xenstored process...
SUSE SLES15 Security Update : xen (SUSE-SU-2026:2102-1)
The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2102-1 advisory. This update for xen fixes the following issues - CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053...
SUSE SLES12 Security Update : xen (SUSE-SU-2026:2066-1)
The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2066-1 advisory. This update for xen fixes the following issues - CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. -...
Security update for xen
This update for xen fixes the following issues CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. CVE-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant tabl...
SUSE-SU-2026:2102-1 Security update for xen
This update for xen fixes the following issues - CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. - CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. - CVE-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. - CVE-2026-23558:...
Security update for xen
This update for xen fixes the following issues CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. CVE-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant tabl...
SUSE-SU-2026:2066-1 Security update for xen
This update for xen fixes the following issues - CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. - CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264066. - CVE-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. - CVE-2026-23558:...
ALPINE-CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557 Xenstored DoS via XS_RESET_WATCHES command
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557
The Xen hypervisor is vulnerable to a Denial of Service (DoS) attack where any guest can cause xenstored to crash. The root cause is an assert() triggering when processing the XS_RESET_WATCHES command within a transaction. This issue does not affect builds where NDEBUG is defined. Remediation inc...
CVE-2026-23557 Xenstored DoS via XS_RESET_WATCHES command
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
EUVD-2026-30925
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
CVE-2026-23557: Reachable Assertion
Any guest can cause xenstored to crash by issuing a XSRESETWATCHES command within a transaction due to an assert triggering. In case xenstored was built with NDEBUG defined nothing bad will happen, as assert is doing nothing in this case. Note that the default is not to define NDEBUG for xenstore...
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,...