GSD-2023-1000443 ext4: fix reserved cluster accounting in __es_remove_extent()
A flaw in ext4 reserved cluster accounting can lead to denial of service, requiring a kernel patch for mitigation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2023-1000443?
GSD-2023-1000443 is a denial of service vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ext4: fix reserved cluster accounting in __es_remove_extent()
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 v6.0.18 by commit 854017d24233f5445e83d372f3497a3ff9080a1a, it was introduced in version v5.4 by commit 8fcc3a580651cceb94a9f48e1914491400d5146b. For more details please see the references link.
Which versions are affected by GSD-2023-1000443?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000443?
No fix has been published for GSD-2023-1000443 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2023-1000443 being exploited?
There is no known exploitation of GSD-2023-1000443 in the wild and no public exploit code.