GSD-2021-1002023 isofs: Fix out of bound access for corrupted isofs image
A local attacker can cause an out-of-bounds access in the Linux kernel ISO9660 filesystem driver by mounting a corrupted image, potentially leading to system crash or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is GSD-2021-1002023?
GSD-2021-1002023 is a memory corruption vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
isofs: Fix out of bound access for corrupted isofs image
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 v5.4.159 by commit 6e80e9314f8bb52d9eabe1907698718ff01120f5. For more details please see the references link.
Which versions are affected by GSD-2021-1002023?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002023?
No fix has been published for GSD-2021-1002023 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1002023 being exploited?
There is no known exploitation of GSD-2021-1002023 in the wild and no public exploit code.