Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a sequence that may be called if vsyscall is interrupted for performance sampling NMI...

K42745412: Linux kernel vulnerability CVE-2020-25221

Security Advisory Description getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can ...

SUSE CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

CVE-2020-25221

A flaw was found in the getgatepage in mm/gup.c in the Linux kernel, where it allows privilege escalation due to incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This flaw is triggered by any 64-bit...

DEBIAN-CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

UBUNTU-CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

CVE-2020-25221

CVE-2020-25221 affects Linux kernel 5.7.x and 5.8.x before 5.8.7. The vulnerability arises in get_gate_page() implemented in mm/gup.c, due to incorrect reference counting of the backing struct page for the vsyscall page, causing a refcount underflow. It can be triggered by any 64-bit process that...

PT-2020-16024 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 5.7.x through 5.8.6 Description: The issue is related to incorrect reference counting of the struct page that backs the vsyscall page, caused by gate page mishandling in the get gate page function in mm/gup.c. This resul...

Debian DSA-4078-1 : linux - security update (Meltdown)

Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Meltdown and is...

Exploit for Race Condition in Linux Linux_Kernel

ocoboroot.c linux AFPACKET race condition exploit exploit for...

Linux Kernel 64位Personality处理本地拒绝服务漏洞

BUGTRAQ ID: 38027 Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux Kernel在设置进程的personality时存在错误，本地用户在执行缺少ELF解释器的64位应用时可能触发分段错误，导致内核崩溃。 漏洞起因是fs/binfmtelf.c文件中的loadelfbinary函数，该函数在检查ELF解释器可用之前调用了 SETPERSONALITY，将之前的32位进程转换为了64位进程。如果execve成功，这不会导致问题，但在...

kernel security update

CentOS Errata and Security Advisory CESA-2009:1455 Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. Updated 23rd February 2010...

Moderate: Red Hat Security Advisory: kernel security and bug fix update

Updated kernel packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. Updated 23rd February 2010 This update adds references to two KBase articles...

Fedora Core 4 : kernel-2.6.12-1.1447_FC4 (2005-820)

Fri Aug 26 2005 Dave Jones 2.6.12-1.1447FC4 - Better identify local builds. 159696 - Fix disk/net dump & netconsole. 152586 - Fix up sleeping in invalid context in sym2 driver. 164995 - Fix 'semaphore is not ready' error in snd-intel8x0m. - Restore hwclock functionality on some systems. 144894 -...

linux/x86 /bin/sh sysenter Opcode Array Payload 23 Bytes

linux/x86 /bin/sh sysenter Opcode Array Payload 23 Bytes. Shellcode exploit for linx86 platform / lnxbinsh4.c - v1 - 23 Byte /bin/sh sysenter Opcode Array Payload Copyrightc 2005 c0ntex Copyrightc 2005 BaCkSpAcE This program is free software; you can redistribute it and/or modify it under the ter...

linux/x86 /bin/sh sysenter Opcode Array Payload 27 Bytes

No description provided by source. / lnxbinsh3.c - v1 - 27 Byte /bin/sh sysenter Opcode Array Payload Copyrightc 2005 c0ntex [email protected] Copyrightc 2005 amnesia [email protected] This program is free software; you can redistribute it and/or modify it under the terms of the GNU...