Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

Linux block and network PV device frontends do not zero memory regions before sharing them with the backend CVE-2022-26365, CVE-2022-33740. Additionally, the granularity of the grant table does not allow sharing smaller than a 4K page, resulting in unrelated data residing in the same 4K page as...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: xen: Speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expect the backend to...

Astra Linux – Vulnerability in Linux 5.10, Linux

Several Linux PV device frontends are vulnerable to attacks by backends that use grant table interfaces to remove access rights in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

Astra Linux – Vulnerability in Linux 5.10, Linux

Several Linux PV device frontends are vulnerable to attacks by backends that use grant table interfaces to remove access rights in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

CVE-2026-23558

A flaw was found in Xen. A race condition exists when a Hardware Virtual Machine HVM or Para-Virtualization Hybrid PVH guest changes its grant table version from v2 to v1 while simultaneously mapping status pages. This can lead to some status pages being freed while still mapped in the guest's...

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. -...

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...

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:...

Astra Linux – Vulnerability in Linux 5.10, Linux

Linux block and network PV device frontends do not zero memory regions before sharing them with the backend CVE-2022-26365, CVE-2022-33740. Additionally, the granularity of the grant table does not allow sharing smaller than a 4K page, resulting in unrelated data residing in the same 4K page as...

Astra Linux – Vulnerability in Linux 5.10, Linux

Several Linux PV device frontends are vulnerable to attacks by backends that use grant table interfaces to remove access rights in a way that is subject to race conditions. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The blkfront,...

Astra Linux – Vulnerability in Linux 5.10, Linux

Linux block and network PV device frontends do not zero memory regions before sharing them with the backend CVE-2022-26365, CVE-2022-33740. Additionally, the granularity of the grant table does not allow sharing smaller than a 4K page, resulting in unrelated data residing in the same 4K page as...

ALPINE-CVE-2026-23558

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status pages via XENMEMaddtophysmap. Some of the status pages may then be freed while...

CVE-2026-23558

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status pages via XENMEMaddtophysmap. Some of the status pages may then be freed while...

CVE-2026-23558 grant table v2 race in status page mapping

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status pages via XENMEMaddtophysmap. Some of the status pages may then be freed while...

EUVD-2026-30928

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status pages via XENMEMaddtophysmap. Some of the status pages may then be freed while...

CVE-2026-23558 grant table v2 race in status page mapping

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status pages via XENMEMaddtophysmap. Some of the status pages may then be freed while...

CVE-2026-23558

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status pages via XENMEMaddtophysmap. Some of the status pages may then be freed while...