OSV-2020-825 Index-out-of-bounds in tcg_liveness_analysis_arm
An index-out-of-bounds error in QEMU's ARM TCG liveness analysis can cause a crash, impacting system availability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-825?
OSV-2020-825 is a memory corruption vulnerability in unicorn, published on 14 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23971
Crash type: Index-out-of-bounds
Crash state:
tcg_liveness_analysis_arm
tcg_gen_code_arm
cpu_arm_gen_code_arm
Which versions are affected by OSV-2020-825?
1 open source package ship an affected version, including unicorn.
| Package | Affected | Fixed in |
|---|---|---|
unicorn OSS-Fuzz | All versions | None |
How do I fix OSV-2020-825?
No fix has been published for OSV-2020-825 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 OSV-2020-825 being exploited?
There is no known exploitation of OSV-2020-825 in the wild and no public exploit code.