Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3-its: Fixed a potential VPE leak upon error. In itsvpeirqdomainalloc, when itsvpeinit returns an error, there is an off-by-one issue with the number of VPEs that need to be freed. This issue was fixed by simply...

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

A flaw was discovered in KVM. When calling the KVMGETDEBUGREGS ioctl on 32-bit systems, there might be uninitialized portions of the kvm Debugregs structure that could be copied into user space, resulting in an information leak...

Astra Linux – Vulnerability in Linux

A flaw was discovered in the KVM’s AMD code, responsible for supporting SVM nested virtualization. The flaw occurs during the processing of the VMCB virtual machine control block provided by the L1 guest, which is used to spawn or handle a nested guest L2. Due to improper validation of the “intct...

Astra Linux – Vulnerability in Linux

A flaw was discovered in the KVM’s AMD code, which handles SVM nested virtualization. The flaw occurs during the processing of 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 issue could all...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: octeontx2-vf: Added a missing “free” field for “allocpercpu”. Added the “freepercpu” field for the allocated “vf-hw.lmtinfo” in order to avoid memory leaks, similar to the “pf-hw.lmtinfo” in...

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

In the Linux kernel, the following vulnerability has been resolved: qed/qedsriov: protection against NULL references from qediovgetVFInfo. We must ensure that the information returned by the helper function is valid before using it. This issue was detected by the Linux Verification Center...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: igb: Initialize the mailbox message for VF reset When a MAC address is not assigned to the VF, that portion of the message sent to the VF is not set. However, the memory is allocated from the stack, which means that information m...

Astra Linux – Vulnerability in Qemu

A issue was discovered in QEMU versions 7.1.0 through 8.2.1. In hw/pci/pciesriov.c, the registervfs function does not set NumVFs to PCISRIOVTOTALVF, resulting in improper interaction with hw/nvme/ctrl.c...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: In the tty subsystem, for the ngsm module, a race condition occurred during the modification of the status line of a dead connection. The gsmcleanupmux function cleans up the GSM-related resources by closing all Data Link Control...

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

In the Linux kernel, the following vulnerability has been resolved: net: ena: Fixed incorrect descriptor freeing behavior. ENA has two types of TX queues: - Queues that only process TX packets arriving from the network stack. - Queues that only process TX packets forwarded to them by XDPREDIRECT ...

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

In the Linux kernel, the following vulnerabilities have been resolved: net/iucv: Fixed the size of interrupt data iucvirqdata needs to be 4 bytes larger. These bytes are not used by the iucv module, but are written by the z/VM hypervisor in case a CPU is deconfigured. Reported as: BUG...

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: scsi: storvsc: Fix handling of virtual Fibre Channel timeouts Hyper-V provides the ability to connect Fibre Channel LUNs to the host system and present them as SCSI devices in a guest VM. I/O to the vFC device is handled by the...

Astra Linux – Vulnerability in OVN

A flaw was discovered in the Open Virtual Network OVN. Specifically, specially crafted UDP packets may bypass egress access control lists ACLs in OVN installations that are configured with a logical switch equipped with DNS records. This occurs if the same switch has any egress ACLs configured...

Astra Linux – Vulnerability in Qemu

A bug in QEMU could cause a guest I/O operation that is normally directed to an arbitrary disk offset to be directed instead to offset 0. This could potentially overwrite the VM’s boot code. For example, this could be exploited by L2 guests who have a virtual disk vdiskL2 stored on the virtual di...

Astra Linux – Vulnerability in Qemu

It was found that the patch for CVE-2020-17380/CVE-2020-25085 is ineffective. As a result, QEMU becomes vulnerable to out-of-bounds read/write access issues that were previously identified in the SDHCI controller emulation code. This flaw allows a malicious privileged attacker to crash the QEMU...

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

Transmitted requests in Xen’s virtual network protocol can consist of multiple parts. Although none of them are actually useful, except for the initial part, any of these parts can be of zero length, meaning they carry no data at all. Apart from the certain initial portion of the data to be...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: BPF: Use VMMAP instead of VMALLOC for the ringbuf area. After the commit 2fd3fb0be1d1 “kasan, vmalloc: unpoison VMALLOC pages after mapping”, non-VMALLOC mappings will be marked as accessible in getvmareanode when KASAN is enable...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Get source vCPUs from source VM for SEV-ES intrahost migration Fix a goof where KVM tries to grab source vCPUs from the destination VM when doing intrahost migration. Grabbing the wrong vCPU not only hoses the guest, it...

Astra Linux – Vulnerability in Qemu

A flaw was discovered in the QEMU-built-in VNC server during the processing of ClientCutText messages. A incorrect exit condition may lead to an infinite loop when inflating a zlib buffer controlled by an attacker in the inflatebuffer function. This could allow a remotely authenticated client, wh...

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

In the Linux kernel, the following vulnerability has been resolved: Networks: Fixed a stack overflow issue when LRO is disabled for virtual interfaces. When the features of a virtual interface are updated, the updated features are synchronized with its underlying interfaces. This synchronization...