CVE-2026-79610

XSA-501 was about issues with v1 - v2 and v2 - v1 changes racing certain other grant table operations. Sadly a v2 - v1 - v2 change has yet another effect which wasn't accounted for: During the first change, status pages would be freed. During the second change they would be allocated again. Hence...

CVE-2026-102702

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. 1 XSA-437 CVE-2023-34321 addressed issues with overflows in calculations involved in guests flushing caches through GNTTABOPcacheflush. Unfortunately the fix there...

CVE-2026-102702

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. 1 XSA-437 CVE-2023-34321 addressed issues with overflows in calculations involved in guests flushing caches through GNTTABOPcacheflush. Unfortunately the fix there...

CVE-2026-79610

A double version change race condition exists in the grant-table component of Xen . A v2 -> v1 -> v2 change sequence causes status pages to be freed and reallocated, potentially resulting in stale pointers within the status array. This vulnerability impacts all Xen versions 4.0 and newer (e...

SUSE-SU-2026:4642-1 Security update for xen

This update for xen fixes the following issues: - CVE-2026-79609: x86: XPTI may break on huge-memory systems bsc1283321. - CVE-2026-79610: grant-table: double version change race bsc1283322. - CVE-2026-79611: VMX: VMentry failure with branch tracing and blocked states bsc1283323. - CVE-2026-10270...

SUSE-SU-2026:4641-1 Security update for xen

This update for xen fixes the following issues: Security issues fixed: - CVE-2026-79609: x86: XPTI may break on huge-memory systems bsc1283321. - CVE-2026-79610: grant-table: double version change race bsc1283322. - CVE-2026-79611: VMX: VMentry failure with branch tracing and blocked states...

CVE-2026-102702: Undefined Security Weakness

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. 1 XSA-437 CVE-2023-34321 addressed issues with overflows in calculations involved in guests flushing caches through GNTTABOPcacheflush. Unfortunately the fix there...

Xen Grant Table Disclosure DoS

The vulnerability of the Grant Table of the Xen hypervisor is related to synchronization errors when using a common resource. Exploiting this vulnerability can allow an attacker to disclose protected information or cause service failures...

Xen Grant Table Disclosure DoS

The vulnerability of the Grant Table of the Xen hypervisor is related to synchronization errors when using a common resource. Exploiting this vulnerability can allow an attacker to disclose protected information or cause service failures...

Astra Linux – Vulnerability in Linux 5.10, Linux, 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 5.10, Linux, 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 5.10, Linux

Several Linux PV device frontends are vulnerable to attacks by backends that use grant table interfaces to remove access rights from resources. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The backends that use these interfaces may n...

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 from resources. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The backends that use these interfaces may n...

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 5.10, Linux

Several Linux PV device frontends are vulnerable to attacks by backends that use grant table interfaces to remove access rights from resources. This can lead to potential data leaks, data corruption by malicious backends, and denial of service attacks. The backends that use these interfaces may n...

SUSE-SU-2026:4090-1 Security update for xen

This update for xen fixes the following issues: Update to version 4.20.3 jscPED-8907. Security issues fixed: - CVE-2026-42493: x86 shadow paging is deprecated bsc1271528. - CVE-2026-42494,CVE-2026-42495,CVE-2026-62423,CVE-2026-62424,CVE-2026-62425: buffer overruns in libfsimage iso9660 handling...

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...

PT-2026-72326

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the xen/gntdev component where the gntdev ioctl map grant ref function fails to release a reference acquired by gntdev alloc map when it cannot copy the operation resu...

SUSE SLES12: xen / xen-devel / xen-doc-html / xen-libs / xen-libs-32bit / etc (SUSE-SU-2026:3451-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3451-1 advisory. This update for xen fixes the following issues - CVE-2026-42493: x86 shadow paging is deprecated bsc1271528. -...

Security update for xen

This update for xen fixes the following issues CVE-2026-42493: x86 shadow paging is deprecated bsc1271528. CVE-2026-42494,CVE-2026-42495,CVE-2026-62423,CVE-2026-62424,CVE-2026-62425: buffer overruns in libfsimage iso9660 handling bsc1271530. CVE-2026-62426,CVE-2026-62427: sysctl and platform-op...