GSD-2023-1000900 ext4: fix off-by-one errors in fast-commit block filling

Not scored Published

An off-by-one error in the ext4 fast-commit block filling logic may lead to memory corruption or system instability, requiring a kernel patch.

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

What is GSD-2023-1000900?

GSD-2023-1000900 is a vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network.

Official description

ext4: fix off-by-one errors in fast-commit block filling

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 v5.15.87 by commit 18f28f13301d1afb8cea9c4ddcecdbff14488ec6, it was introduced in version v5.10 by commit aa75f4d3daaeb1389b9cce9d6b84401eaf228d4e. For more details please see the references link.

Which versions are affected by GSD-2023-1000900?

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

PackageAffectedFixed in
Kernel LinuxAll versionsNone

How do I fix GSD-2023-1000900?

No fix has been published for GSD-2023-1000900 yet. Limit exposure of the affected software until one is available.

Is GSD-2023-1000900 being exploited?

There is no known exploitation of GSD-2023-1000900 in the wild and no public exploit code.

Sources

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