20 matches found
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...
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...
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...
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 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
CVE-2026-23557 affects xenstored. Any guest can crash xenstored by issuing XS_RESET_WATCHES within a transaction due to an assert(); behavior depends on NDEBUG (assert() disabled when NDEBUG is defined). Local attack vector with low privileges and no user interaction, resulting in a high availabi...
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...
Security update for xen
This update for xen fixes the following issues: Update to Xen 4.20.3 bug fix release bsc1027519 jscPED-8907. CVE-2025-54505: Floating Point Divider State Sampling on AMD CPUs AMD-SN-7053 bsc1262428. CVE-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant table v...
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-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant table v2 race in status page mapping bsc1262180. Special Instruction...
Fedora 43 : xen (2026-78cd69d9ae)
The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-78cd69d9ae advisory. oxenstored keeps quota related use counts across domain destruction XSA-483, CVE-2026-23556 Xenstored DoS via XSRESETWATCHES command XSA-484,...
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-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant table v2 race in status page mapping bsc1262180. Special Instruction...
SUSE-SU-2026:1657-1 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-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. - CVE-2026-23558: grant table v2 race in status page mapping bsc1262180...
PT-2026-35870
6 Xen Security Advisories 483 v2 CVE-2026-23556: oxenstored keeps quota related use counts across domain destruction https://t.co/C1Gujss3PN 484 v2 CVE-2026-23557: Xenstored DoS via XS RESET WATCHES command https://t.co/XE62vAFyR0 1/3...
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-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. CVE-2026-23558: grant table v2 race in status page mapping bsc1262180. Special Instruction...
SUSE-SU-2026:1645-1 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-2026-23557: Xenstored DoS via XSRESETWATCHES command bsc1262178. - CVE-2026-23558: grant table v2 race in status page mapping bsc1262180...
Xenstored DoS via XS_RESET_WATCHES command
ISSUE DESCRIPTION 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...
SUSE CVE-2020-29485
An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are...
The vulnerability of Xen hypervisors, related to memory release errors, allows a hacker to cause a service failure.
The vulnerability of the Xen hypervisor implementation is related to memory release errors. Exploiting this vulnerability can allow an attacker to cause a service failure by using the XSRESETWATCHES request...
oxenstored memory leak in reset_watches
ISSUE DESCRIPTION When acting upon a guest XSRESETWATCHES request, not all tracking information is freed. IMPACT A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. VULNERABLE SYSTEMS All version of Xen since 4.6 are vulnerable. Only systems using the Ocaml...