kernel: uninitialized kernel data leak in userspace coredumps

A flaw was found in the Linux kernel’s implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data...

ALEA-2020:4742 userspace graphics, xorg-x11, and mesa bug fix and enhancement update

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section...

userspace graphics, xorg-x11, and mesa bug fix and enhancement update

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section...

PT-2020-6177 · Linux +8 · Linux +8

Name of the Vulnerable Software and Affected Versions: Linux affected versions not specified Description: A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. This issue allows a local user to increase their privileges to that of a running kernel on a...

kernel: uninitialized kernel data leak in userspace coredumps

A flaw was found in the Linux kernel’s implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data...

kernel: uninitialized kernel data leak in userspace coredumps

A flaw was found in the Linux kernel’s implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data...

Fedora: Security Advisory for kernel-headers (FEDORA-2020-708b23f2ce)

The remote host is missing an update for the Copyright C 2020 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...

[SECURITY] Fedora 32 Update: kernel-headers-5.8.6-200.fc32

Kernel-headers includes the C header files that specify the interface between the Linux kernel and userspace libraries and programs. The header files define structures and constants that are needed for building most standard programs and are also needed for rebuilding the glibc package...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2020-5837)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-5837 advisory. - can: peakusb: pcanusbfd: Fix info-leaks to USB devices Tomas Bortoli Orabug: 31351221 CVE-2019-19535 - media: hdpvr: Fix an error handling path i...

EulerOS 2.0 SP5 : kernel (EulerOS-SA-2020-1920)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - In calcvmmayflags of ashmem.c, there is a possible arbitrary write to shared memory due to a permissions bypass. This could lead to local...

FreeBSD : FreeBSD -- sendmsg(2) privilege escalation (8db74c04-d794-11ea-88f8-901b0ef719ab)

When handling a 32-bit sendmsg2 call, the compat32 subsystem copies the control message to be transmitted if any into kernel memory, and adjusts alignment of control message headers. The code which performs this work contained a time-of-check to time-of-use TOCTOU vulnerability which allows a...

FreeBSD -- sendmsg(2) privilege escalation

Problem Description: When handling a 32-bit sendmsg2 call, the compat32 subsystem copies the control message to be transmitted if any into kernel memory, and adjusts alignment of control message headers. The code which performs this work contained a time-of-check to time-of-use TOCTOU vulnerabili...

SUSE-SU-2020:14442-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2020-10773: Fixed a memory leak on s390/s390x, in the cmmtimeouthander in file arch/s390/mm/cmm.c bnc1172999. - CVE-2020-14416: Fixed a race condition in...

kernel: Count overflow in FUSE request leading to use-after-free issues.

A flaw was found in the Linux kernel's implementation of the FUSE filesystem, where it allows a page reference counter overflow. If a page reference counter overflows into a negative value, it can be placed back into the "free" list for reuse by other applications. This flaw allows a local attack...

EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-1807)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - The kernel package contains the Linux kernel vmlinuz, the core of any Linux operating system. The kernel handles the basic functions of the...

Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario

A flaw was found in the Linux kernel, where it allows userspace processes, for example, a guest VM, to directly access h/w devices via its VFIO driver modules. The VFIO modules allow users to enable or disable access to the devices' MMIO memory address spaces. If a user attempts to access the...

Amazon Linux AMI : kernel (ALAS-2020-1401)

The version of kernel installed on the remote host is prior to 4.14.186-110.268. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1401 advisory. An issue where a provided address with accessok is not checked was discovered in i915gemexecbuffer2ioctl in...

Linux ioperm bitmap context switching issues

ISSUE DESCRIPTION Linux 5.5 overhauled the internal state handling for the iopl and ioperm system calls. Unfortunately, one aspect on context switch wasn't wired up correctly for the Xen PVOps case. IMPACT IO port permissions don't get rescinded when context switching to an unprivileged task...

Important: kernel

Issue Overview: An issue where a provided address with accessok is not checked was discovered in i915gemexecbuffer2ioctl in drivers/gpu/drm/i915/i915gemexecbuffer.c in the Linux kernel through 4.19.13. A local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory...

ASB-A-135368228

In i915gemexecbuffer2ioctl of i915gemexecbuffer.c, there is a possible arbitrary kernel memory write due to a missing validation of a userspace pointer. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...