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...

SUSE SLES15 Security Update : xen (SUSE-SU-2026:1657-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1657-1 advisory. - CVE-2025-54505: floating point divider state sampling on AMD CPUs AMD-SN-7053 bsc1262428. - CVE-2026-23557: Xenstored DoS via...

PT-2026-34980

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description On Zen1 processors, the hardware divider may retain partial results from previous operations under certain conditions. This behavior allows another attacker-controlled thread to leak the...

x86: Floating Point Divider State Sampling

ISSUE DESCRIPTION Researchers from the CISPA Helmholtz Center for Information Security have discovered Floating Point Divider State Sampling. It is detailed in a paper titled "TREVEX: A Black-Box Detection Framework For Data-Flow Transient Execution Vulnerabilities" For more information, see:...