OSV-2020-2161 Heap-buffer-overflow in msix_vector_masked
A heap buffer overflow in QEMU's MSI-X vector masking allows attackers to cause denial of service or execute arbitrary code.
- 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-2020-2161?
OSV-2020-2161 is a memory corruption vulnerability in qemu, published on 15 Nov 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=27418
Crash type: Heap-buffer-overflow READ 1
Crash state:
msix_vector_masked
msix_is_masked
msix_table_mmio_write
Which versions are affected by OSV-2020-2161?
1 open source package ship an affected version, including qemu.
| Package | Affected | Fixed in |
|---|---|---|
qemu OSS-Fuzz | All versions | None |
How do I fix OSV-2020-2161?
No fix has been published for OSV-2020-2161 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-2020-2161 being exploited?
There is no known exploitation of OSV-2020-2161 in the wild and no public exploit code.