PT-2024-11086

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to KVM: VMX, where preemption is disabled when probing user return MSRs via RDSMR/WRMSR. If the MSR holds a different value per logical CPU, the WRMSR could corrupt...

SUSE-SU-2021:0139-1 Security update for slurm_20_02

This update for slurm2002 fixes the following issues: Updated to 20.02.6, addresses two security fixes: PMIx - fix potential buffer overflows from use of unpackmem. CVE-2020-27745 bsc1178890 X11 forwarding - fix potential leak of the magic cookie when sent as an argument to the xauth command...

Fedora 31 : xen (2020-d46fe34349)

x86 pv: Crash when handling guest access to MSRMISCENABLE XSA-333, CVE-2020-25602 1881619 Missing unlock in XENMEMacquireresource error path XSA-334, CVE-2020-25598 1881616 race when migrating timers between x86 HVM vCPU-s XSA-336, CVE-2020-25604 1881618 PCI passthrough code reading back hardware...

Denial Of Service (DoS)

xen is vulnerable to denial of service DoS. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning up...

DEBIAN-CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

ALPINE-CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

Design/Logic Flaw

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

UBUNTU-CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

CVE-2020-25601

CVE-2020-25601 (Xen) : A lack of preemption in evtchn_reset() and evtchn_destroy() inside the FIFO event channel model can cause a guest with many active event channels to stall the hypervisor, enabling a local attacker (malicious or buggy guest kernel) to mount a Denial of Service affecting the ...

CVE-2020-25601

An issue was discovered in Xen through 4.14.x. There is a lack of preemption in evtchnreset / evtchndestroy. In particular, the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning...

CVE-2020-25601

A security flaw was found in Xen. A lack of preemption in the FIFO event channel model may cause the CPU to spend an almost unbounded amount of processing time. This flaw allows malicious or buggy guest kernels to mount a denial of service DoS attack affecting the entire system. The highest threa...

lack of preemption in evtchn_reset() / evtchn_destroy()

ISSUE DESCRIPTION In particular the FIFO event channel model allows guests to have a large number of event channels active at a time. Closing all of these when resetting all event channels or when cleaning up after the guest may take extended periods of time. So far there was no arrangement for...

Memory corruption

fpregsstatevalid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service memory corruption or possibly have unspecified other impact because of incorrect fpufpregsownerctx caching, as demonstrated...

CVE-2019-19602

fpregsstatevalid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service memory corruption or possibly have unspecified other impact because of incorrect fpufpregsownerctx caching, as demonstrated...

UBUNTU-CVE-2019-19602

fpregsstatevalid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service memory corruption or possibly have unspecified other impact because of incorrect fpufpregsownerctx caching, as demonstrated...

CVE-2019-19602

fpregsstatevalid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service memory corruption or possibly have unspecified other impact because of incorrect fpufpregsownerctx caching, as demonstrated...

CVE-2019-19602

fpregsstatevalid in arch/x86/include/asm/fpu/internal.h in the Linux kernel before 5.4.2, when GCC 9 is used, allows context-dependent attackers to cause a denial of service memory corruption or possibly have unspecified other impact because of incorrect fpufpregsownerctx caching, as demonstrated...

Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of the preemption timer

A use-after-free vulnerability was found in the way the Linux kernel's KVM hypervisor emulates a preemption timer for L2 guests when nested =1 virtualization is enabled. This high resolution timerhrtimer runs when a L2 guest is active. After VM exit, the syncvmcs12 timer object is stopped. The...