Design/Logic Flaw

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

UBUNTU-CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

CVE-2021-26932

CVE-2021-26932 affects Linux kernels 3.2 through 5.10.16 when used with Xen PV backends. The issue arises in grant-mapping error handling during batch hypercalls, where errors can be ignored or misreported, causing improper unmapping and potential downstream impact. Affected components include ar...

CVE-2021-26931

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests such as out of memory conditions, it isn'...

CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

CVE-2021-26931

An issue was discovered in the Linux kernel 2.6.39 through 5.10.16, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests such as out of memory conditions, it isn'...

CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

Linux: grant mapping error handling issues

ISSUE DESCRIPTION Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9053)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9053 advisory. - xen-blkback: fix error handling in xenblkbkmap Jan Beulich Orabug: 32492109 CVE-2021-26930 - xen-scsiback: don't 'handle' error by BUG Jan Beulic...

PT-2021-3110 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 2.6.39 through 5.10.16 Description: An issue was discovered in the Linux kernel, as used in Xen, where block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. This issue...

Upgrading to Ubuntu 14.04, RHEL 7 and CentOS 7 Guests

Customers who wish to upgrade existing Linux guests to versions which now operate in HVM mode that is, RHEL7, CentOS 7, and Ubuntu 14.04 should perform an in-guest upgrade. At this point, the upgraded Guest will only run in PV mode - which is not supported and has known issues. Customers should r...

The XEN virtual machine monitor appears“deadly”vulnerabilities-vulnerability warning-the black bar safety net

! XEN has always been known for high performance, less resource-intensive, win IBM, AMD, HP, Red Hat and Novell, and many other world-class hardware and software manufacturers of high recognition and strong support of many domestic and foreign enterprises and users to use XEN to build a...

Xen Denial of Service Vulnerability (CNVD-2016-05534)

Xen is an open source virtual machine monitor product developed at the University of Cambridge in the United Kingdom. Xen has a denial-of-service vulnerability, which can be exploited by an attacker using a PV-mode x86 32-bit hardware platform to trigger a security check that will cause the VM...