Linux Kernel x86_emulate_insn Buffer Overflow DoS

The vulnerability of the x86emulateinsn function in the arch/x86/kvm/emulate.c component of the Linux operating system’s kernel is related to pointer arithmetic errors. Exploiting this vulnerability allows an attacker to cause a service failure...

QEMU: VNC: integer underflow in vnc_client_cut_text_ext leads to CPU exhaustion

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

kernel: KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks

A flaw was found in the KVM's Intel nested virtualization feature nVMX. Since L1 and L2 shared branch prediction modes guest-user and guest-kernel, KVM did not protect indirect branches in L1 from steering by a malicious agent in L2. This could allow a malicious nested guest to carry out Spectre ...

kernel: crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak For some sev ioctl interfaces, input may be passed that is less than or equal to SEVFWBLOBMAXSIZE, but larger than the data that PSP firmware return...

kernel: KVM: NULL pointer dereference in kvm_mmu_invpcid_gva

A flaw was found in KVM. With shadow paging enabled if INVPCID is executed with CR0.PG=0, the invlpg callback is not set, and the result is a NULL pointer dereference. This flaw allows a guest user to cause a kernel oops condition on the host, resulting in a denial of service...

kernel: KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks

A flaw was found in the KVM's Intel nested virtualization feature nVMX. Since L1 and L2 shared branch prediction modes guest-user and guest-kernel, KVM did not protect indirect branches in L1 from steering by a malicious agent in L2. This could allow a malicious nested guest to carry out Spectre ...

Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the...

EulerOS Virtualization 2.10.0 : libtasn1 (EulerOS-SA-2023-1922)

According to the versions of the libtasn1 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - GNU Libtasn1 before 4.19.0 has an ETYPEOK off-by-one array size check that affects asn1encodesimpleder. CVE-2021-46848 Note that...

EulerOS Virtualization 2.10.1 : expat (EulerOS-SA-2023-1888)

According to the versions of the expat package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XMLExternalEntityParserCrea...

EulerOS Virtualization 2.10.1 : libxml2 (EulerOS-SA-2023-1893)

According to the versions of the libxml2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XMLPARSEHUGE parser option...

EulerOS Virtualization 2.10.1 : binutils (EulerOS-SA-2023-1884)

According to the versions of the binutils package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - zlib before 1.2.12 allows memory corruption when deflating i.e., when compressing if the input has many distant matches...

EulerOS Virtualization 2.10.1 : edk2 (EulerOS-SA-2023-1914)

According to the versions of the edk2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize. CVE-2021-38578 Note that Tenable...

EulerOS Virtualization 2.10.0 : python3 (EulerOS-SA-2023-1927)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows...

EulerOS Virtualization 2.10.0 : dbus (EulerOS-SA-2023-1916)

According to the versions of the dbus packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2. An authenticated attack...

EulerOS Virtualization 2.10.1 : systemd (EulerOS-SA-2023-1911)

According to the versions of the systemd packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An off-by-one Error issue was discovered in Systemd in formattimespan function of time-util.c. An attacker could supply specific...

EulerOS Virtualization 2.10.0 : libXpm (EulerOS-SA-2023-1937)

According to the versions of the libXpm package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in libXpm. When processing a file with width of 0 and a very large height, some parser functions will be called...

EulerOS Virtualization 2.10.1 : python-pillow (EulerOS-SA-2023-1897)

According to the versions of the python-pillow packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - Pillow before 9.2.0 performs Improper Handling of Highly Compressed GIF Data Data Amplification. CVE-2022-45198 - Pillow...

EulerOS Virtualization 2.10.1 : kernel (EulerOS-SA-2023-1902)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A vulnerability, which was classified as problematic, was found in Linux Kernel. This affects the function...

EulerOS Virtualization 2.10.0 : samba (EulerOS-SA-2023-1929)

According to the versions of the samba packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrapdes and unwrapdes3 routines of Heimdal. The...

EulerOS Virtualization 2.10.1 : python3 (EulerOS-SA-2023-1896)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The Keccak XKCP SHA-3 reference implementation before fdc6fef has an integer overflow and resultant buffer overflow that allows...