kernel security and bug fix update

5.14.0-162.18.11.OL9 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and...

Rocky Linux and virt-devel:Rocky Linux bug fix and enhancement update

An update is available for sgabios, module.hivex, module.libvirt, module.virt-v2v, hivex, perl-Sys-Virt, module.libguestfs, module.nbdkit, netcf, swtpm, module.qemu-kvm, module.seabios, module.libvirt-python, virt-v2v, libtpms, module.supermin, libvirt-dbus, qemu-kvm, supermin, module.libvirt-dbu...

K80557033: Linux kernel vulnerability CVE-2018-16882

Security Advisory Description A use-after-free issue was found in the way the Linux kernel's KVM hypervisor processed posted interrupts when nested=1 virtualization is enabled. In nestedgetvmcs12pages, in case of an error while processing posted interrupt address, it unmaps the 'pidescpage' witho...

K11546763: Linux kernel vulnerability CVE-2021-3653

Security Advisory Description A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB virtual machine control block provided by the L1 guest to spawn/handle a nested guest L2. Due to improper validation of the "intctl" field, this...

K30046854: Linux kernel vulnerability CVE-2019-19332

Security Advisory Description An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel's KVM hypervisor handled the 'KVMGETEMULATEDCPUID' ioctl2 request to get CPUID features emulated by the KVM hypervisor. A user or process able to...

K13145361: Linux kernel KVM subsystem vulnerability CVE-2014-3647

Security Advisory Description arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel through 3.17.2 does not properly perform RIP changes, which allows guest OS users to cause a denial of service guest OS crash via a crafted application. CVE-2014-3647 Impact A local user with Advanced...

K17199: Linux kernel vulnerability CVE-2014-3690

Security Advisory Description arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.17.2 on Intel processors does not ensure that the value in the CR4 control register remains the same after a VM entry, which allows host OS users to kill arbitrary processes or cause a denial of...

K23641249: KVM hypervisor vulnerability CVE-2020-2732

Security Advisory Description A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessibl...

K15732: Linux kernel vulnerability CVE-2013-0311

Security Advisory Description Description The translatedesc function in drivers/vhost/vhost.c in the Linux kernel before 3.7 does not properly handle cross-region descriptors, which allows guest OS users to obtain host OS privileges by leveraging Kernel-base Virtual Machine KVM guest OS privilege...

K17120: Linux kernel vulnerability CVE-2014-8134

Security Advisory Description The paravirtopssetup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirtenabled setting for KVM guest kernels, which makes it easier for guest OS users to bypass the ASLR protection mechanism via a crafted application that rea...

K54606234: Linux kernel vulnerability CVE-2016-10150

Security Advisory Description Use-after-free vulnerability in the kvmioctlcreatedevice function in virt/kvm/kvmmain.c in the Linux kernel before 4.8.13 allows host OS users to cause a denial of service host OS crash or possibly gain privileges via crafted ioctl calls on the /dev/kvm device...

K08413011: Linux kernel vulnerability CVE-2019-7221

Security Advisory Description The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free. CVE-2019-7221 Impact There is no impact; F5 products are not affected by this vulnerability. Security Advisory Status F5 Product Development has evaluated the currently supported releases...

K61294700: Linux kernel vulnerability CVE-2020-27777

Security Advisory Description A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down usually due to Secure Boot guest system running on top of PowerVM or KVM hypervisors pseries platform a root like local user could use this flaw to further...

K56499646: Linux kernel vulnerability CVE-2021-3501

Security Advisory Description A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this...

K07721343: Linux kernel vulnerability CVE-2018-10901

Security Advisory Description A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the...

K59513013: Linux kernel vulnerability CVE-2019-14821

Security Advisory Description An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvmcoalescedmmio' object, wherein write indices...

K34886212: Linux kernel vulnerability CVE-2017-8106

Security Advisory Description The handleinvept function in arch/x86/kvm/vmx.c in the Linux kernel 3.12 through 3.15 allows privileged KVM guest OS users to cause a denial of service NULL pointer dereference and host OS crash via a single-context INVEPT instruction with a NULL EPT pointer...

K57454331: Linux Kernel vulnerability CVE-2018-10853

Security Advisory Description A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilegeCPL level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw t...

K01217337: Linux kernel vulnerability CVE-2021-22543

Security Advisory Description An issue was discovered in Linux: KVM through Improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write...

K80212034: Linux kernel vulnerability CVE-2021-3656

Security Advisory Description A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB virtual machine control block provided by the L1 guest to spawn/handle a nested guest L2. Due to improper validation of the "virtext" field, this...