GSD-2023-1000785 bpf: Fix slot type check in check_stack_write_var_off
A flaw in the Linux kernel BPF verifier allows local attackers to potentially escalate privileges or execute code via improper stack slot type checks.
- 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-2023-1000785?
GSD-2023-1000785 is a memory corruption 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
bpf: Fix slot type check in check_stack_write_var_off
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 v6.0.16 by commit 249a6f58940de21fe9f0618b96cdbff437e121a8, it was introduced in version v5.12 by commit 01f810ace9ed37255f27608a0864abebccf0aab3. For more details please see the references link.
Which versions are affected by GSD-2023-1000785?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000785?
No fix has been published for GSD-2023-1000785 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-2023-1000785 being exploited?
There is no known exploitation of GSD-2023-1000785 in the wild and no public exploit code.