GSD-2022-1007756 nilfs2: fix use-after-free bug of ns_writer on remount

Not scored Published

A use-after-free bug in the nilfs2 filesystem allows local attackers with high privileges to potentially execute code or escalate privileges.

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-2022-1007756?

GSD-2022-1007756 is an use after free vulnerability in Kernel, published on 8 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

nilfs2: fix use-after-free bug of ns_writer on remount

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 v6.0.9 by commit b152300d5a1ba4258dacf9916bff20e6a8c7603b. For more details please see the references link.

Which versions are affected by GSD-2022-1007756?

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

PackageAffectedFixed in
Kernel LinuxAll versionsNone

How do I fix GSD-2022-1007756?

No fix has been published for GSD-2022-1007756 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is GSD-2022-1007756 being exploited?

There is no known exploitation of GSD-2022-1007756 in the wild and no public exploit code.

Sources

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