GSD-2021-1002728 bpf: Fix signed bounds propagation after mov32
A bug in Linux Kernel BPF verifier allows incorrect signed bounds propagation after mov32, potentially leading to undefined behavior or security issues.
- 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-2021-1002728?
GSD-2021-1002728 is a vulnerability in Kernel, published on 27 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bpf: Fix signed bounds propagation after mov32
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 v5.15.11 by commit f77d7a35d4913e4ab27abb36016fbfc1e882a654, it was introduced in version v5.7 by commit 3f50f132d8400e129fc9eb68b5020167ef80a244. For more details please see the references link.
Which versions are affected by GSD-2021-1002728?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002728?
No fix has been published for GSD-2021-1002728 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002728 being exploited?
There is no known exploitation of GSD-2021-1002728 in the wild and no public exploit code.