Linux kernel缓冲区错误漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. Linux kernel suffers from a buffer overflow vulnerability that can be exploited by an attacker to bypass Linux kernel access restrictions and read or modify data via bpf...

kernel: DoS in rb_per_cpu_empty()

A lack of CPU resources in the Linux kernel tracing module functionality was found in the way users use the trace ring buffer in specific way. Only privileged local users with CAPSYSADMIN capability could use this flaw to starve the resources causing denial of service...

USN-5115-1: Linux kernel (OEM) vulnerabilities

It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information WiFi network traffic. CVE-2020-3702 Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF...

USN-5091-2 linux-raspi, linux-raspi-5.4 vulnerabilities

Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. CVE-2021-33624 It was...

kernel: netfilter: use-after-free in the packet processing context

A use-after-free flaw was found in the packet processing context in net/netfilter/xtables.c in netfilter in the Linux Kernel. This issue occurs when the per-CPU sequence count is mishandled during concurrent iptables rules replacement and can be exploited with the CAPNETADMIN capability in an...

PT-2021-8026 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.11.0+ Description: The vulnerability is related to the kmap local function in the Linux kernel, which doubles the number of per-CPU fixmap slots allocated for kmap local to use half of them as guard regions...

Xen Security Vulnerabilities

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports migration at runtime to ensure uptime and avoid downtime.Service is an individual developer's...

kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c

A flaw was found in the allocatetracebuffer in kernel/trace/trace.c in the debug subsystem, when failure to allocate a dynamic percpu area, a resource cleanup is called. The pointer buf-buffer still holds the address and is not set to NULL, which can cause a use-after-free problem, leading to a...

UBUNTU-CVE-2019-19768

In the Linux kernel 5.4.0-rc2, there is a use-after-free read in the blkaddtrace function in kernel/trace/blktrace.c which is used to fill out a blkiotrace structure and place it in a per-cpu sub-buffer...

Privilege Escalation

Linux kernel is vulnerable to privilege escalation. The VMX code sets the GDT.LIMIT to 64 KB and does not restore it to the previous host value. This allows an attacker is able to escalate their privileges by placing malicious entries to the per-cpu variables in the GDT with a corrupted GDT limit...

kernel: kvm: vmx: host GDT limit corruption

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

kernel: kvm: vmx: host GDT limit corruption

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

UBUNTU-CVE-2018-10901

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

CVE-2018-10901

A flaw was found in Linux kernel's KVM virtualization subsystem. The VMX code does not restore the GDT.LIMIT to the previous host value, but instead sets it to 64KB. With a corrupted GDT limit a host's userspace code has an ability to place malicious entries in the GDT, particularly to the per-cp...

PT-2018-2205 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel's KVM virtualization subsystem affected versions not specified Description: A flaw in the Linux kernel's KVM virtualization subsystem is related to inadequate access control. The issue is caused by the VMX code not restoring the...

kernel-rt: stack corruption when task gets scheduled out using the debug stack

The int3 handler in the Linux kernel before 3.3 relies on a per-CPU debug stack, which allows local users to cause a denial of service stack corruption and panic via a crafted application that triggers certain lock contention...