GSD-2021-1000445 hfsplus: prevent corruption in shrinking truncate
A flaw in the Linux kernel's HFS+ filesystem allows local attackers to cause data corruption or system instability via shrinking truncate operations.
- 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-2021-1000445?
GSD-2021-1000445 is a denial of service 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
hfsplus: prevent corruption in shrinking truncate
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 v4.19.191 by commit 52dde855663e5db824af51db39b5757d2ef3e28a, it was introduced in version v4.19 by commit 31651c607151f1034cfb57e5a78678bea54c362b. For more details please see the references link.
Which versions are affected by GSD-2021-1000445?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000445?
No fix has been published for GSD-2021-1000445 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-2021-1000445 being exploited?
There is no known exploitation of GSD-2021-1000445 in the wild and no public exploit code.