CVE-2016-4557

The replacemapfdwithmapptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service use-after-free via crafted BPF instructions that reference an incorrect file...

CVE-2016-4558

CVE-2016-4558 : The Linux kernel BPF subsystem before 4.5.5 mishandles reference counts, enabling a local attacker to trigger a denial-of-service via use-after-free, with possible other impact on systems with large memory (32 GB+ and 1 TB mentioned in the advisory). The Nessus/NVD documents confi...

CVE-2016-4794

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service BUG or possibly have unspecified other impact via crafted use of the mmap and bpf system calls...

CVE-2016-4794

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service BUG or possibly have unspecified other impact via crafted use of the mmap and bpf system calls...

CVE-2016-4558

The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference counts, which allows local users to cause a denial of service use-after-free or possibly have unspecified other impact via a crafted application on 1 a system with more than 32 Gb of memory, related to the program reference...

UBUNTU-CVE-2016-4558

The BPF subsystem in the Linux kernel before 4.5.5 mishandles reference counts, which allows local users to cause a denial of service use-after-free or possibly have unspecified other impact via a crafted application on 1 a system with more than 32 Gb of memory, related to the program reference...

UBUNTU-CVE-2016-4794

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service BUG or possibly have unspecified other impact via crafted use of the mmap and bpf system calls...

Linux kernel security bypass vulnerability (CNVD-2016-03201)

Linux kernel is an open source operating system. A security vulnerability exists in Linux kernel bpf, which allows a local attacker to exploit the vulnerability to execute restricted code to load the eBPF socket filter program using the bpf system call...

Linux 内核通过 BPF 系统调用提权漏洞

漏洞概要 4 月 27 日有安全研究人员在 bugs.chromium.org 站点提交了本地提权高 危漏洞。 Linux 内核版本大于等于 4.4 时,当内核编译了 CONFIGBPFSYSCALL 并 且 sysctl 中的 kernel.unprivilegedbpfdisabled 没有明确设置为 1 时,无特 权的代码可以使用 bpf 系统调用加载 eBPF socket 过滤程序,从而达到系统提 权的⺫的,而前面的两个条件在最新的 Linux 发行版 Ubuntu 16.04 桌面版和 服务器版本均满足,经过测试 Kali Rolling 发行版 内核 4.4.0...

UBUNTU-CVE-2016-4557

The replacemapfdwithmapptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service use-after-free via crafted BPF instructions that reference an incorrect file...

CVE-2016-4557

The replacemapfdwithmapptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service use-after-free via crafted BPF instructions that reference an incorrect file...

Linux Kernel (Ubuntu 16.04) - Reference Count Overflow Using BPF Maps

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=809 Most things in the kernel use 32-bit reference counters, relying on the fact that the memory constraints of real computers make it impossible to create enough references to overflow the counters. There are exceptions for things...

Linux Kernel (Ubuntu 16.04) - Reference Count Overflow Using BPF Maps

Exploit for linux platform in category dos / poc Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=809 Most things in the kernel use 32-bit reference counters, relying on the fact that the memory constraints of real computers make it impossible to create enough references to...

Linux Kernel 4.4.x (Ubuntu 16.04) - 'double-fdput()' in bpf(BPF_PROG_LOAD) Privilege Esc

Exploit for linux platform in category local exploits Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=808 In Linux =4.4, when the CONFIGBPFSYSCALL config option is set and the kernel.unprivilegedbpfdisabled sysctl is not explicitly set to 1 at runtime, unprivileged code can use...

Linux Kernel (Ubuntu 16.04) - Reference Count Overflow Using BPF Maps

Linux Kernel Ubuntu 16.04 - Reference Count Overflow Using BPF Maps Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=809 Most things in the kernel use 32-bit reference counters, relying on the fact that the memory constraints of real computers make it impossible to create enough...

Linux Kernel 4.4.x (Ubuntu 16.04) - double-fdput() bpf(BPF_PROG_LOAD) Privilege Escalation

Linux Kernel 4.4.x Ubuntu 16.04 - double-fdput bpfBPFPROGLOAD Privilege Escalation Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=808 In Linux =4.4, when the CONFIGBPFSYSCALL config option is set and the kernel.unprivilegedbpfdisabled sysctl is not explicitly set to 1 at runtim...

CVE-2016-2383

The adjustbranches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions...

Design/Logic Flaw

The adjustbranches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions...

CVE-2016-2383

The adjustbranches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions...

CVE-2016-2383

The CVE-2016-2383 vulnerability affects the Linux kernel (kernel/bpf/verifier.c) where, in the backward-jump delta handling, local attackers can craft BPF instructions to read kernel memory. It is exploitable by local users via a crafted packet filter. The issue is present in kernel versions befo...