CLSA-2025-1762171389 kernel: Fix of 16 CVEs

nfs: fix possible null-ptr-deref when parsing param CVE-2022-50455 - KVM: arm64: Disassociate vcpus from redistributor region on teardown CVE-2024-40989 - HID: core: Harden s32ton against conversion to 0 bits CVE-2025-38556 - ALSA: usb-audio: Validate UAC3 cluster segment descriptors...

CLSA-2025-1757699693 kernel-uek: Fix of 19 CVEs

Bluetooth: afbluetooth: Fix Use-After-Free in btsockrecvmsg CVE-2024-21803 - net: defer final 'struct net' free in netns dismantle CVE-2024-56658 - netfilter: validate user input for expected length CVE-2024-35896 - drm/amd/display: Fix out-of-bounds access in 'dcn21linkencodercreate'...

CLSA-2024-1720468480 kernel: Fix of 101 CVEs

kvm: initialize all of the kvmdebugregs structure before sending it to userspace CVE-2023-1513 - wifi: mac80211: fix MBSSID parsing use-after-free CVE-2022-42719 - mac80211: always allocate struct ieee80211elems CVE-2022-42719 - netfilter: nftables: initialize registers in nftdochain...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use vmcb01 in the emulation of VMLOAD/VMSAVE. The commit cc3ed80ae69f states that “KVM: nSVM: always use vmcb01 for vmsave/vmload of guest state”. This commit ensured that KVM always used vmcb01 for the fields...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Forcibly leave nested virtualization mode when SMM state is toggled The nested virtualization mode is forcibly exited if the user space toggles the SMM state using KVMSETVCPUEVENTS or KVMSYNCX86EVENTS. If the user space...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: KVM: x86/pmu: Disabled support for adaptive PEBS. Support for virtualizing adaptive PEBS has been discontinued. This is because KVM’s implementation is architecturally broken without an obvious or easy way to address this issu...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: Explicitly verify that the target vCPU is online in kvmgetvcpu It is necessary to explicitly verify that the target vCPU is fully online prior to clamping the index in kvmgetvcpu. If the index is “bad”, the nospec clamping...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fixed a situation where a hard lockup occurs in the virtual machine after prolonged inactivity, due to the periodic HV timer. When advancing the expiration of the guest’s APIC timer in periodic mode, set the expiration ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Check instead of asserting on nested TSC scaling support Check for nested TSC scaling support on nested SVM VMRUN instead of asserting that TSC scaling is exposed to L1 if L1’s MSRAMD64TSCRATIO has diverged from KVM’s...

Astra Linux – vulnerability in linux-5.10, linux-6.1, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Reset IRTE to host control if new route isn’t postable Restore an IRTE back to host control remapped or posted MSI mode if the new GSI route prevents posting the IRQ directly to a vCPU, regardless of the GSI routing typ...

Astra Linux – Vulnerability in Linux

A issue was discovered in Linux: improper handling of VMIO|VMPFNMAP vmas in KVM can bypass RO checks and cause pages to be freed while still accessible by the VMM and guest. This allows users who have the ability to start and control a VM to read/write random pages of memory, potentially leading ...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: KVM: VMX: Fixed a crash caused by uninitialized currentvmcs. KVM enables “Enlightened VMCS” and “Enlightened MSR Bitmap” when running as a nested hypervisor on top of Hyper-V. When the MSR bitmap is updated, the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: Always flush the async PF workqueue when a vCPU is being destroyed. Whenever a vCPU clears its completion queue, i.e., when a VM and all its vCPUs are being destroyed, the async PF workqueue must always be flushed. KVM must...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Make ICCSGIEL1 undef in the absence of a vGICv3 On a system with a GICv3, if a guest has not been configured with a GICv3, and the host is not capable of emulating GICv2, writing to any of the ICCSGIEL1 registers will...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel: KVM: The mask for PEBSENABLE must be set for guests with a specified vCPU value. When generating the MSRIA32PEBSENABLE value that will be loaded on the VM-Entry to a KVM guest, the value should be masked with the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: KVM: SVM: Obtain source vCPUs from the source VM for SEV-ES intrahost migration Fixed a bug where KVM attempts to retrieve source vCPUs from the destination VM during intrahost migration. Retrieving the wrong vCPU not only hal...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: fix in setting the fpc register The function kvmarchvcpuioctlsetfpu allows for setting the floating-point control fpc register of a guest CPU. The new value is tested for validity by temporarily loading it into the fpc...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Load DR6 with the guest value only before entering the .vcpurun loop. Move the conditional loading of hardware DR6 with the guest’s DR6 value out of the core .vcpurun loop to fix a bug where KVM may load hardware with a...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Immediately reset the MMU context when the SMM flag is cleared The MMU context should be reset immediately when the SMM flag of the vCPU is cleared, so that the SMM flag in the MMU context is always synchronized with th...

Astra Linux – Vulnerability in Linux 5.10, Linux

A flaw was discovered in KVM. When updating a guest’s page table entry, vmpgoff was incorrectly used as the offset to obtain the page’s pfn. Since vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region...