CVE-2026-45890

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the xen-netback backend not verifying that the queue number is zero, potentially leading to a...

Linux Distros Unpatched Vulnerability : CVE-2026-45890

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write 0 to the xenbus key multi-queue-num-queues. The connect functio...

CVE-2026-45890: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: xen-netback: reject zero-queue configuration from guest A malicious or buggy Xen guest can write "0" to the xenbus key "multi-queue-num-queues". The connect function in the backend only validates the upper bound requestednumqueue...

PT-2026-43757

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw in the xen-netback component allows a malicious or buggy Xen guest to cause a guest-to-host denial of service on systems where panic on warn is set to 1. The issue occurs because...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005139)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005139 advisory. In the Linux kernel, the following vulnerability has been resolved: net/xen-netback: prevent UAF in xenvifflushhash During the listforeachentryrcu iteration call of...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003978)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003978 advisory. Guests can trigger deadlock in Linux netback driver This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond ...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004780)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004780 advisory. Guests can trigger deadlock in Linux netback driver This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond ...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001069)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001069 advisory. The Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service loop by triggering ring pointer corruption. Tenable...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000783)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000783 advisory. The netback driver in Xen, when using certain Linux versions that do not allow sleeping in softirq context, allows local guest administrators to cause a denial of...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001515)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001515 advisory. An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver lacks necessary treatment of errors such as...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000792)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000792 advisory. Memory leak in drivers/net/xen-netback/netback.c in the Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001298)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001298 advisory. An issue was discovered in xenvifsethashmapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other product...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004782)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004782 advisory. Guests can trigger deadlock in Linux netback driver This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond ...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003979)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003979 advisory. Guests can trigger deadlock in Linux netback driver This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond ...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-001436)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001436 advisory. Guest can force Linux netback driver to hog large amounts of kernel memory This CNA information record relates to multiple CVEs; the text explains which...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002186)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002186 advisory. The Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service loop by triggering ring pointer corruption. Tenable...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002191)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002191 advisory. The netback driver in Xen, when using certain Linux versions that do not allow sleeping in softirq context, allows local guest administrators to cause a denial of...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002028)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002028 advisory. Memory leak in drivers/net/xen-netback/netback.c in the Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001878)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001878 advisory. Memory leak in drivers/net/xen-netback/netback.c in the Xen netback functionality in the Linux kernel before 3.7.8 allows guest OS users to cause a denial of service...