GSD-2021-1000468 ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook

Not scored Published

A logic error in the ARM hardware breakpoint handler could lead to undefined behavior, requiring local privileged access to exploit.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is GSD-2021-1000468?

GSD-2021-1000468 is a vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook

This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.14.233 by commit ed1f67465327cec4457bb988775245b199da86e6, it was introduced in version v4.7 by commit 1879445dfa7bbd6fe21b09c5cc72f4934798afed. For more details please see the references link.

Which versions are affected by GSD-2021-1000468?

1 open source package ship an affected version, including Kernel.

PackageAffectedFixed in
Kernel LinuxAll versionsNone

How do I fix GSD-2021-1000468?

No fix has been published for GSD-2021-1000468 yet. Limit exposure of the affected software until one is available.

Is GSD-2021-1000468 being exploited?

There is no known exploitation of GSD-2021-1000468 in the wild and no public exploit code.

Sources

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