Astra Linux – Vulnerability in Qemu

A flaw was discovered in QEMU. An assertion failure occurred in the usbepget function in hw/net/core.c when attempting to retrieve the USB endpoint from a USB device. This flaw may allow a malicious unprivileged guest user to crash the QEMU process on the host and cause a denial of service...

Astra Linux – Vulnerability in open-vm-tools

VMware Tools contains a vulnerability related to bypassing the SAML token signature. A malicious actor who has been granted “Guest Operation Privileges” can potentially elevate their privileges if the target virtual machine has been assigned a more privileged “Guest Alias”. source-iocs-preserved...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the virtio-fs shared file system daemon virtiofsd of QEMU. The new ‘xattrmap’ option may cause the ‘security.capability’ xattr in the guest to not be dropped when writing files, potentially allowing a modified, privileged executable to be executed within the guest. In rar...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: kvm: Avoid speculative attacks from out-of-range memslot accesses. KVM’s mechanism for accessing guest memory converts a guest physical address gpa to a host virtual address using the right-shifted gpa also known as gfn and a...

Astra Linux – Vulnerability in Qemu

A double-free vulnerability was identified in QEMU virtio devices virtio-gpu, virtio-serial-bus, virtio-crypto. The memreentrancyguard flag does not provide sufficient protection against reentrancy issues related to DMA operations. This vulnerability could allow a malicious privileged guest user ...

Astra Linux – Vulnerability in amd64-microcode

Incomplete system memory cleanup in the SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the QEMU implementation of VMWare’s paravirtual RDMA device. This flaw allows a malicious guest driver to execute hardware commands when shared buffers have not yet been allocated, potentially leading to a use-after-free condition...

Astra Linux – Vulnerability in virglrenderer

A NULL pointer dereferencing in the vrendrenderer.c file of virglrenderer during versions 0.8.0 allows guest OS users to cause a denial of service due to malformed commands...

Astra Linux – Vulnerability in libvirt

qemu/qemudriver.c in libvirt before version 6.0.0 improperly handles the handling of a monitor job during a query to a guest agent. This allows attackers to cause a denial of service API blockage...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the QXL display device emulation in QEMU. The double retrieval of the guest-controlled values cursor-header.width and cursor-header.height can lead to the allocation of a small cursor object, followed by a subsequent heap-based buffer overflow. A malicious privileged gues...

Astra Linux – Vulnerability in Qemu

A out-of-bounds heap buffer access issue was identified in the ARM Generic Interrupt Controller emulator of QEMU, as of and including qemu 4.2.0 on the aarch64 platform. The issue arises because, when writing an interrupt ID to the controller’s memory area, it is not masked to be 4 bits wide. Thi...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the QXL display device emulation in QEMU. An integer overflow in the cursoralloc function can lead to the allocation of a small cursor object, followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the virtio-net device in QEMU. When the RSS feature is enabled on the virtio-net network card, the indirectionstable data within RSS becomes controllable. Setting values that are excessively large may lead to an index out-of-bounds issue, potentially resulting in a heap...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: cxl: fixed a possible null-ptr-deref in cxlguestinitafu|adapter. If deviceregister fails in cxlregisterafu|adapter, the device is not added. In this case, deviceunregister cannot be called in the error path. Otherwise, a...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86 – Mark the target gfn of the emulated atomic instruction as dirty When emulating an atomic access on behalf of the guest, mark the target gfn as dirty if the CMPXCHG instruction attempts to be executed and fails without ...

Astra Linux – Vulnerability in Qemu

A stack overflow vulnerability was discovered in the Intel HD Audio device intel-hda of QEMU. A malicious guest could exploit this flaw to crash the QEMU process on the host, resulting in a denial of service condition. The greatest threat posed by this vulnerability is to system availability. Thi...

Astra Linux – Vulnerability in Chromium

The use of “after free” in the Guest View of Google Chrome before version 113.0.5672.126 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption through a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Zap all roots when unmapping gfn range in TDP MMU Both valid and invalid roots are cleared when unmapping a gfn range. KVM must ensure that it does not hold any references to the freed page after the unmapping...

Astra Linux – Vulnerability in amd64-microcode

IOMMU improperly handles certain special address ranges with invalid device table entries DTEs. This may allow an attacker with privileges and a compromised Hypervisor to induce DTE faults to bypass RMP checks in SEV-SNP, potentially resulting in a loss of guest integrity...

Astra Linux – Vulnerability in virglrenderer

A heap-based buffer overflow in the vrendrenderertransferwriteiov function in vrendrenderer.c in virglrenderer from version 0.8.0 allows guest OS users to cause a denial of service, or a QEMU guest-to-host escape and code execution, through VIRGLCCMDRESOURCEINLINEWRITE commands...