CVE-2022-2196 Speculative execution attacks in KVM VMX

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

CVE-2022-2196 Speculative execution attacks in KVM VMX

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

CVE-2022-2196

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

CVE-2022-2196

The CVE-2022-2196 entry concerns a regression in Linux kernel KVM/nVMX where speculative execution could leak from an L2 guest to the host L1 due to inadequate Spectre v2 mitigations (retpolines/IBPB/eIBRS context). The description states an L2 attacker with code execution can influence indirect ...

CVE-2022-2196 Speculative execution attacks in KVM VMX

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

CVE-2022-2196

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

CVE-2022-2196: Initialization of a Resource with an Insecure Default

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L2 with code...

Linux kernel 安全漏洞

The Linux kernel is the kernel used by the Linux Foundation's open source operating system Linux. The Linux kernel suffers from a security vulnerability that stems from nVMX allowing speculative execution attacks where L2 can execute a Spectre v2 attack against L1 because L1 believes it does not...

SUSE SLED15: cluster-md-kmp-64kb / cluster-md-kmp-default / etc (SUSE-SU-2022:4616-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:4616-1 advisory. The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes. Th...

Security Bulletin: IBM QRadar Network Packet Capture has released 7.3.1 Patch 1, and 7.2.8 Patch 1 in response to the vulnerabilities known as Spectre and Meltdown.

Summary IBM has released the following 7.3.1 Patch 1 and 7.2.8. Patch 1 for IBM QRadar Network Packet Capture in response to CVE-2017-5753, CVE-2017-5715, and CVE-2017-5754. Vulnerability Details CVEID: CVE-2017-5753 CVEID: CVE-2017-5715 CVEID: CVE-2017-5754 Affected Products and Versions IBM...

SUSE SLES12: xen / xen-doc-html / xen-libs / xen-libs-32bit / xen-tools / etc (SUSE-SU-2022:4241-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:4241-1 advisory. - CVE-2022-33746: Fixed DoS due to excessively long P2M pool freeing bsc1203806. - CVE-2022-33748: Fixed DoS due to race in locking...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5728-2)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5728-2 advisory. Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading t...

Rocky Linux 8 : kernel (RLSA-2022:7110)

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2022:7110 advisory. - A kernel information leak flaw was identified in the scsiioctl function in drivers/scsi/scsiioctl.c in the Linux kernel. This flaw allows a local...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5728-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5728-1 advisory. Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading t...

Oracle Linux 8 : kernel (ELSA-2022-7683)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-7683 advisory. - x86/speculation: Add LFENCE to RSB fill sequence Waiman Long 2115080 CVE-2022-26373 - x86/speculation: Add RSB VM Exit protections Waiman Long 211508...

kernel: dm ioctl: prevent potential spectre v1 gadget

A vulnerability was found in the Linux kernel's dm-ioctl interface in the lookupioctl function, which accepts a user-provided cmd value that is used to index the ioctls array directly. This issue could lead to an out-of-bounds access if the CPU speculatively executes the array access before cmd i...

SUSE SLES15 Security Update : xen (SUSE-SU-2022:3925-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:3925-1 advisory. - CVE-2022-33746: Fixed DoS due to excessively long P2M pool freeing bsc1203806. - CVE-2022-33748: Fixed DoS due to race in locking...

CVE-2022-23824

A flaw was found in hw. The AMD CPUs can be attacked similar to the previously known Spectre Variant 2 CVE-2017-5715. This issue affects AMD CPUs where the OS relies on IBPB to flush the return address predictor. As a result, an unprivileged attacker could use this flaw to cross the syscall and...

RHEL 8 : kernel (RHSA-2022:7683)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:7683 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: off-path attacker may inject data or...

hw: cpu: arm64: Spectre-BHB

A new cache speculation vulnerability, known as Branch History Injection BHI or Spectre-BHB, was found in hw. Spectre-BHB is similar to Spectre v2, except that malicious code uses the shared branch history stored in the CPU Branch History Buffer, or BHB to influence mispredicted branches within t...