Astra Linux – Vulnerability in Qemu

A reentrancy issue related to DMA was discovered in the USB EHCI controller emulation of QEMU. EHCI does not verify whether the Buffer Pointer overlaps with its MMIO region when transferring USB packets. Crafted content may be written to the controller’s registers, potentially triggering...

Astra Linux – Vulnerability in Qemu

A out-of-bounds write flaw was discovered in the UAS USB-attached SCSI device emulation in QEMU in versions prior to 6.2.0-rc0. The device uses the guest-provided stream number without proper checking, which can lead to out-of-bounds access to the UASDevice-data3 and UASDevice-status3 fields. A...

Astra Linux – Vulnerability in Qemu

A use-after-free vulnerability was discovered in the LSI53C895A SCSI Host Bus Adapter emulation in QEMU. The flaw occurs during the processing of repeated messages to cancel the current SCSI request using the lsidomsgout function. This flaw allows a malicious privileged user within the guest to...

Astra Linux – Vulnerability in Linux, Linux 5.10

There is a bug in /net/nfc/netlink.c that allows an attacker to crash the Linux kernel by simulating an NFC device from user-space...

Astra Linux – Vulnerability in Qemu

A out-of-bounds read flaw was discovered in the QXL display device emulation in QEMU. The qxlphys2virt function does not check the size of the structure pointed to by the guest physical address, potentially allowing it to read beyond the bounds of the bar space onto adjacent pages. A malicious...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: arm64: The issue was fixed in the concurrently setting of insnemulation sysctls. The emulationprochandler function changes table-data for procdointvecminmax. However, it may cause an OOPs error if called concurrently with itself:...

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

An “off-by-one” error was detected in the SCSI device emulation in QEMU. This error could occur during the processing of MODE SELECT commands in modesensepage, if the ‘page’ argument is set to MODEPAGEALLS 0x3f. A malicious guest could exploit this flaw to potentially cause QEMU to crash, resulti...

Astra Linux – Vulnerability in Qemu

A NULL pointer dereference flaw was discovered in the am53c974 SCSI host bus adapter emulation in QEMU in versions prior to 6.0.0. This issue occurs when handling the “Information Transfer” command. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a...

Astra Linux – Vulnerability in Qemu

QEMU 4.2.0 has a use-after-free issue in hw/net/e1000ecore.c, as a user of the guest OS can trigger an e1000e packet with the data’s address set to the e1000e’s MMIO address...

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 Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: HID: bigbenff: prevent null pointer dereference When emulating the device through UHID, there is a possibility that we do not have output reports, and as a result, reportfield is set to null...

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

In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Address reentrant enqueue adding class to eltree twice Savino says: “We are writing to report that this recent patch 141d34391abbb315d68556b7c67ad97885407547 1 can be bypassed, and a UAF can still occur when HFSC ...

Astra Linux – Vulnerability in Qemu

A divide-by-zero issue was discovered in dwc2handlepacket in hw/usb/hcd-dwc2.c, within the hcd-dwc2 USB host controller emulation in QEMU. A malicious guest could exploit this flaw to crash the QEMU process on the host, resulting in a denial of service...

Astra Linux – Vulnerability in Qemu

An integer underflow issue was discovered in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could exploit this flaw to render QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service...

Astra Linux – Vulnerability in Qemu

An infinite loop flaw was discovered in the USB xHCI controller emulation of QEMU while calculating the length of the Transfer Request Block TRB Ring. This flaw allows a privileged guest user to halt the QEMU process on the host, resulting in a denial of service...

Astra Linux – Vulnerability in Qemu

A use-after-free vulnerability was discovered in the QEMU LSI53C895A SCSI Host Bus Adapter emulation. This issue may cause a crash or a virtual machine to escape...

Astra Linux – Vulnerability in Qemu

A reachable assertion issue was detected in the USB EHCI emulation code of QEMU. This issue can occur during the processing of USB requests due to a faulty handling of the DMA memory map. A malicious privileged user within the guest environment may exploit this flaw to send invalid USB requests,...

The vulnerability of the QEMU hardware emulation software, related to reading data beyond the buffer’s acceptable limits, allows a hacker to trigger a service failure.

The vulnerability of the QEMU hardware emulation software is related to reading data from beyond the allowed buffer limits. Exploiting this vulnerability can allow an attacker to cause a service failure...

The vulnerability in the hw/audio/virtio-snd.c component of the QEMU hardware emulation software allows a hacker to trigger a system failure.

The vulnerability of the hw/audio/virtio-snd.c component of the QEMU hardware emulation software is related to integer overflow. Exploiting this vulnerability can allow an attacker to cause a system failure...