GSD-2023-1000921 tracing/hist: Fix out-of-bound write on 'action_data.var_ref_idx'
An out-of-bound write in the Linux kernel tracing subsystem allows local attackers with high privileges to potentially execute code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2023-1000921?
GSD-2023-1000921 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
tracing/hist: Fix out-of-bound write on 'action_data.var_ref_idx'
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 v5.15.87 by commit 15697f653399253f9be4ed2a1e03d795f3cfee94, it was introduced in version v5.6 by commit d380dcde9a07ca5de4805dee11f58a98ec0ad6ff. For more details please see the references link.
Which versions are affected by GSD-2023-1000921?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000921?
No fix has been published for GSD-2023-1000921 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-2023-1000921 being exploited?
There is no known exploitation of GSD-2023-1000921 in the wild and no public exploit code.