Linux - Broken Permission and Object Lifetime Handling for PTRACE_TRACEME

== Summary == This bug report describes two issues introduced by commit 64b875f7ac8a "ptrace: Capture the ptracer's creds not PTPTRACECAP", introduced in v4.10 but also stable-backported to older versions. I will send a suggested patch in a minute "ptrace: Fix -ptracercred handling for...

CVE-2019-13272

In the Linux kernel before 5.1.17, ptracelink in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a...

UBUNTU-CVE-2019-13272

In the Linux kernel before 5.1.17, ptracelink in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a...

PT-2019-5200

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.1.17 Description The issue is related to improper privilege management in the Linux kernel, specifically in the ptrace link function. This can be exploited by local users to obtain root access under certain...

Access Controls Bypass

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's TCP/IP protocol suite implementation handled sending of certain UDP packets over sockets that used the UDPCORK option when the UDP Fragmentation Offload UFO...

CVE-2019-2054

A flaw was found in the Linux kernel's seccomp implementation which contained a method to bypass seccomp syscall filtering policies that allowed ptrace. This could allow an attacker with code execution privileges within the sandbox to use ptrace to execute systemcalls that would be filtered by th...

EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1480)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance PI futexes. ...

DEBIAN-CVE-2019-2054

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2019-2054

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2019-2054

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2019-2054

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

UBUNTU-CVE-2019-2054

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

CVE-2019-2054: Undefined Security Weakness

In the seccomp implementation prior to kernel version 4.8, there is a possible seccomp bypass due to seccomp policies that allow the use of ptrace. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...

Denial Of Service (DoS)

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance PI futexes. A local, unprivileged user could use this flaw to escalate their privileges on...

Information Disclosure

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance PI futexes. A local, unprivileged user could use this flaw to escalate their privileges on...

Denial Of Service (DoS)

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance PI futexes. A local, unprivileged user could use this flaw to escalate their privileges on...

Privilege Escalation

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance PI futexes. A local, unprivileged user could use this flaw to escalate their privileges on...

Privilege Escalation

kernel-rt is vulnerable to privilege escalation. A race condition was found in the way the Linux kernel's ptrace implementation handled PTRACESETREGS requests when the debuggee was woken due to a SIGKILL signal instead of being stopped. A local, unprivileged user could use this flaw to escalate...

DEBIAN-CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...

UBUNTU-CVE-2019-3901

A race condition in perfeventopen allows local attackers to leak sensitive data from setuid programs. As no relevant locks in particular the credguardmutex are held during the ptracemayaccess call, it is possible for the specified target task to perform an execve syscall with setuid execution...