GSD-2022-1004047 ext4: fix use-after-free in ext4_rename_dir_prepare
A use-after-free flaw in the Linux kernel ext4 filesystem allows local attackers to potentially execute code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1004047?
GSD-2022-1004047 is an use after free vulnerability in Kernel, published on 28 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ext4: fix use-after-free in ext4_rename_dir_prepare
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 v4.9.318 by commit 1a3a15bf6f9963d755270cbdb282863b84839195. For more details please see the references link.
Which versions are affected by GSD-2022-1004047?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1004047?
No fix has been published for GSD-2022-1004047 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-2022-1004047 being exploited?
There is no known exploitation of GSD-2022-1004047 in the wild and no public exploit code.