openSUSE 15.5 Xen DoS Grant Table Fix Advisory 2026-1657-1
suse
April 29, 2026
An update that solves three vulnerabilities can now be installed.
Summary
## This update for xen fixes the following issues: * CVE-2025-54505: floating point divider state sampling on AMD CPUs AMD- SN-7053 (bsc#1262428). * CVE-2026-23557: Xenstored DoS via XS_RESET_WATCHES command (bsc#1262178). * CVE-2026-23558: grant table v2 race in status page mapping (bsc#1262180).
Topics Covered
References
* bsc#1262178
* bsc#1262180
* bsc#1262428
Cross-
* CVE-2025-54505
* CVE-2026-23557
* CVE-2026-23558
CVSS scores:
* CVE-2025-54505 ( SUSE ): 6.9
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
* CVE-2025-54505 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
* CVE-2025-54505 ( NVD ): 2.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-23557 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
* CVE-2026-23558 ( SUSE ): 7.3
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
* CVE-2026-23558 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products:
PREVIOUS
NEXT
Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2026:1657-1
Release Date: 2026-04-29T11:06:54Z
Rating: important
Topics Covered
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Related News
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!