GSD-2023-1000787 bpf: Clobber stack slot when writing over spilled PTR_TO_BTF_ID
A memory corruption vulnerability in the Linux kernel BPF subsystem allows local attackers to potentially execute arbitrary 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-2023-1000787?
GSD-2023-1000787 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: Clobber stack slot when writing over spilled PTR_TO_BTF_ID
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 9ca60194a5b5402685f19b507d899802e1bf38f2, it was introduced in version v5.8 by commit 1d68f22b3d53d368d5cc8d09de890250cae5c945. For more details please see the references link.
Which versions are affected by GSD-2023-1000787?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000787?
No fix has been published for GSD-2023-1000787 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-2023-1000787 being exploited?
There is no known exploitation of GSD-2023-1000787 in the wild and no public exploit code.