x86: TSX Async Abort protections not restored after S3

ISSUE DESCRIPTION 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 non-default setting in MSRTSXCTRL. This setti...

Speculative Code Store Bypass and Floating-Point Value Injection

Bulletin ID: AMD-SB-1003 Potential Impact: Data Leakage Severity: Medium Summary AMD is aware of research from the VUsec group at Vrije Universiteit Amsterdam and believes that these issues are only exploitable in conjunction with software vulnerabilities related to incorrect speculation of...

EulerOS 2.0 SP9 : binutils (EulerOS-SA-2021-1919)

According to the version of the binutils package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - Binutils is a collection of binary utilities, including ar for creating, modifying and extracting from archives, as a family of GNU assemblers,...

Google Researchers Discover A New Variant of Rowhammer Attack

A team of security researchers from Google has demonstrated yet another variant of the Rowhammer vulnerability that targets increasingly smaller DRAM chips to bypass all current mitigations, making it a persistent threat to chip security. Dubbed "Half-Double," the new hammering technique hinges o...

SUSE-SU-2021:1648-1 Security update for xen

This update for xen fixes the following issues: Security issue fixed: - CVE-2021-28689: Fixed some x86 speculative vulnerabilities with bare non-shim 32-bit PV guests XSA-370 bsc1185104 - Make sure xencommons is in a format as expected by fillup. bsc1185682 Each comment needs to be followed by an...

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads leading to disclosure of stack content via side-channel attacks aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

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Q2 2018 Speculative Execution Side Channel Update

Summary: Security researchers identified two software analysis methods that, if used for malicious purposes, have the potential to improperly gather sensitive data from multiple types of computing devices with different vendors’ processors and operating systems. Intel is committed to product and...

2019.2 IPU – TSX Asynchronous Abort Advisory

Summary: A potential security vulnerability in TSX Asynchronous Abort TAA for some Intel® Processors may allow information disclosure. Intel is releasing firmware updates to mitigate this potential vulnerability. Vulnerability Details: CVEID: CVE-2019-11135 Description: TSX Asynchronous Abort...

Speculative Execution and Indirect Branch Prediction Side Channel Analysis Method

Summary: Updated Recommendations Section 04/04/2018 Today a team of security researchers disclosed several software analysis methods that, when used for malicious purposes, have the potential to improperly gather sensitive data from many types of computing devices with many different vendors’...

Q3 2018 Speculative Execution Side Channel Update

Summary: Security researchers have identified a speculative execution side-channel method called L1 Terminal Fault L1TF. This method impacts select microprocessor products supporting Intel® Software Guard Extensions Intel® SGX. Further investigation by Intel has identified two related application...

CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

AZL-6557 CVE-2021-31829 affecting package kernel for versions less than 5.10.78.1-1

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

DEBIAN-CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

Information disclosure

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

UBUNTU-CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...

CVE-2021-31829

CVE-2021-31829 affects the Linux kernel’s eBPF verifier (kernel/bpf/verifier.c) and describes speculative-load handling that could leak kernel memory via side-channels. The Initial document notes the flaw up to kernel 5.12.1 and references remediation through patched kernels; Connected documents ...

CVE-2021-31829

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can...