GSD-2022-1001520 bpf, sockmap: Fix more uncharged while msg has more_data
A memory accounting error in the Linux kernel sockmap allows local attackers to cause memory corruption, potentially leading to privilege escalation or denial of service.
- 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-2022-1001520?
GSD-2022-1001520 is a memory corruption vulnerability in Kernel, published on 24 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bpf, sockmap: Fix more uncharged while msg has more_data
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 v5.16.19 by commit 87d532d41ef937e16f61b3d2094f3a2ac49be365, it was introduced in version v4.20 by commit 604326b41a6fb9b4a78b6179335decee0365cd8c. For more details please see the references link.
Which versions are affected by GSD-2022-1001520?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1001520?
No fix has been published for GSD-2022-1001520 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-2022-1001520 being exploited?
There is no known exploitation of GSD-2022-1001520 in the wild and no public exploit code.