GSD-2023-1000496 btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
A use-after-free vulnerability in the Linux kernel btrfs filesystem allows local attackers to cause a denial of service or potentially execute code.
- 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-2023-1000496?
GSD-2023-1000496 is an use after free 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
btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
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 fce3713197ebba239e1c7e02174ed216ea1ee014, it was introduced in version v4.15 by commit adfb69af7d8cb6a3958f75aad1ef4bc96891d116. For more details please see the references link.
Which versions are affected by GSD-2023-1000496?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000496?
No fix has been published for GSD-2023-1000496 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-2023-1000496 being exploited?
There is no known exploitation of GSD-2023-1000496 in the wild and no public exploit code.