CVE-2021-35477

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled...

CVE-2021-35477

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled...

CVE-2021-35477

The CVE-2021-35477 vulnerability affects the Linux kernel (through 5.13.7): an unprivileged BPF program can read sensitive kernel memory via a Speculative Store Bypass side-channel due to a preempting store not reliably ordering before an attacker-controlled store. The issue is rooted in the eBPF...

PT-2021-4234 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions up to 5.13.7 Description: The issue allows an unprivileged BPF program to obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack. This is possible because the protection...

PT-2021-4239 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions through 5.13.7 Description: The issue allows an unprivileged BPF program to obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack. This occurs because a certain preempting sto...

CVE-2018-3639

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions a commonly used performance optimization. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2021:2427-1 Rating: important References: 1153720 1174978 1179610 1181193 1185428 1185701 1185861 1186463 1186484 1187038 1187050 1187215 1187452 1187554 1187595 1187601 1188062 1188116 Cross-References:...

CVE-2017-5715

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions a commonly used performance optimization. There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel-container (ELSA-2021-9363)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9363 advisory. - bpf: Fix masking negation logic upon negative dst register Daniel Borkmann Orabug: 32911990 CVE-2021-31829 - Bluetooth: verify AMP hcichan before...

CVE-2021-28690

x86: TSX Async Abort protections not restored after S3 This issue relates to the TSX Async Abort speculative security vulnerability. Please see https://xenbits.xen.org/xsa/advisory-305.html for details. Mitigating TAA by disabling TSX the default and preferred option requires selecting a...

CVE-2021-28690

CVE-2021-28690 corresponds to the Xen TSX Async Abort protections not being restored after S3. Affected: Xen hypervisor (x86) with TSX Async Abort mitigation requiring disabling TSX via MSR_TSX_CTRL, a setting that is not restored after S3 resort. Connected sources reiterate the issue across mult...

OracleVM 3.4 : xen (OVMSA-2021-0020)

The remote OracleVM system is missing necessary patches to address security updates: - Observable response discrepancy in some IntelR Processors may allow an authorized user to potentially enable information disclosure via local access. CVE-2021-0089 - Potential speculative code store bypass in a...

CVE-2019-11091

Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access...

USN-5000-2: Linux kernel (KVM) vulnerabilities

USN-5000-1 fixed vulnerabilities in the Linux kernel for Ubuntu 20.04 LTS and the Linux HWE kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux KVM kernel for Ubuntu 20.04 LTS. Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of...

DEBIAN-CVE-2021-29955

A transient execution vulnerability, named Floating Point Value Injection FPVI allowed an attacker to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. A related vulnerability, Speculative Code Store Bypass SCSB, did not affect Firefox.. This vulnerability...

CVE-2021-28689

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...

CVE-2021-28689

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...

Design/Logic Flaw

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...

CVE-2021-28689

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...

CVE-2021-28689

x86: Speculative vulnerabilities with bare non-shim 32-bit PV guests 32-bit x86 PV guest kernels run in ring 1. At the time when Xen was developed, this area of the i386 architecture was rarely used, which is why Xen was able to use it to implement paravirtualisation, Xen's novel approach to...