EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1971)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - There is a flaw reported in drivers/gpu/drm/nouveau/nouveausgdma.c in nouveausgdmacreatettm in Nouveau DRM subsystem. The issue...

Ubuntu 21.04 : Linux kernel vulnerabilities (USN-4977-1)

The remote Ubuntu 21.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4977-1 advisory. Kiyin discovered that the NFC LLCP protocol implementation in the Linux kernel contained a reference counting error. A local attacker could use this to cause...

Denial Of Service (DoS)

linux-gke-5.3:bionic is vulnerable to denial of service. An issue was discovered in the Linux kernel kernel/bpf/verifier.c has an off-by-one error with a resultant integer underflow affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre...

Information Disclosure

kernel is vulnerable to information disclosure. An out-of-bounds speculation on pointer arithmetic in kernel/bpf/verifier.c allows side-channel attacks that defeat Spectre mitigations and allows an attacker to obtain confidential information from kernel memory...

Medium: kernel

Issue Overview: An issue was discovered in the Linux kernel related to mm/gup.c and mm/hugememory.c. The getuserpages aka gup implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended read access...

Amazon Linux 2 : kernel (ALAS-2021-1636)

The version of kernel installed on the remote host is prior to 4.14.232-176.381. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1636 advisory. 2024-05-23: CVE-2021-46909 was added to this advisory. 2024-05-23: CVE-2021-46974 was added to this advisory...

Mozilla Begins Rolling Out 'Site Isolation' Security Feature to Firefox Browser

Mozilla has begun rolling out a new security feature for its Firefox browser in nightly and beta channels that aims to protect users against a new class of side-channel attacks from malicious sites. Called "Site Isolation," the implementation loads each website separately in its own operating...

openSUSE Security Update : the Linux Kernel (openSUSE-2021-716)

The openSUSE Leap 15.2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2021-29650: The netfilter subsystem allowed attackers to cause a denial of service panic because net/netfilter/xtables.c and include/linux/netfilter/xtables.h lack a...

SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1574-1)

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2021-29650: Fixed an issue with the netfilter subsystem that allowed attackers to cause a denial of service panic because net/netfilter/xtables.c and...

SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1571-1)

The SUSE Linux Enterprise 15 SP2 RT kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2021-29650: Fixed an issue with the netfilter subsystem that allowed attackers to cause a denial of service panic because net/netfilter/xtables.c and...

SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1573-1)

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2020-36312: Fixed an issue in virt/kvm/kvmmain.c that had a kvmiobusunregisterdev memory leak upon a kmalloc failure bnc1184509. CVE-2021-29650: Fixed an issue...

SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1572-1)

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes. The following security bugs were fixed : CVE-2020-36312: Fixed an issue within virt/kvm/kvmmain.c that had a kvmiobusunregisterdev memory leak upon a kmalloc failure bnc1184509. CVE-2021-29650: Fix...

openSUSE: Security Advisory for the (openSUSE-SU-2021:0716-1)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Oracle Linux 7 : Unbreakable Enterprise kernel-container (ELSA-2021-9223)

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-9223 advisory. - bpf, x86: Validate computation of branch displacements for x86-64 Piotr Krysiuk Orabug: 32759961 CVE-2021-29154 - ext4: handle error of...

Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2021-9222)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9222 advisory. - bpf, x86: Validate computation of branch displacements for x86-64 Piotr Krysiuk Orabug: 32759961 CVE-2021-29154 - ext4: handle error of...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2021:0716-1 Rating: important References: 1043990 1055117 1065729 1152457 1152489 1156395 1167260 1168838 1174416 1174426 1178089 1179243 1179825 1179851 1180846 1181161 1182613 1182999 1183063 1183203...

A week in security (May 3 – 9)

Last week on Malwarebytes Labs, we discussed how Spectre attacks have come back from the dead; why Facebook banned Instragram ads by Signal; we highlighted the differences between the most popular VPN protocols; pointed out that Google is about to start automatically enrolling users in two-step...

CVE-2021-31829

A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is only accessible to privileged users with CAPSYSADMIN. This flaw allows a local user who can insert eBPF instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all syste...

New Spectre Flaws in Intel and AMD CPUs Affect Billions of Computers

When Spectre, a class of critical vulnerabilities impacting modern processors, was publicly revealed in January 2018, the researchers behind the discovery said, "As it is not easy to fix, it will haunt us for quite some time," explaining the inspiration behind naming the speculative execution...

New Spectre-Like Attacks

Theres new research that demonstrates security vulnerabilities in all of the AMD and Intel chips with micro-op caches, including the ones that were specifically engineered to be resistant to the Spectre/Meltdown attacks of three years ago. Details: The new line of attacks exploits the micro-op...