GSD-2022-1007213 mm: hugetlb: fix UAF in hugetlb_handle_userfault
A use-after-free vulnerability in the Linux kernel hugetlb subsystem allows local attackers to potentially escalate privileges or execute code.
- 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-2022-1007213?
GSD-2022-1007213 is an use after free vulnerability in Kernel, published on 14 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm: hugetlb: fix UAF in hugetlb_handle_userfault
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 v5.10.150 by commit 45c33966759ea1b4040c08dacda99ef623c0ca29, it was introduced in version v4.11 by commit 1a1aad8a9b7bd34f60cdf98cd7915f00ae892c45. For more details please see the references link.
Which versions are affected by GSD-2022-1007213?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1007213?
No fix has been published for GSD-2022-1007213 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-2022-1007213 being exploited?
There is no known exploitation of GSD-2022-1007213 in the wild and no public exploit code.