OSV-2020-2223 Heap-use-after-free in e1000e_write_packet_to_guest
A heap-use-after-free in the QEMU e1000e network driver allows attackers to cause denial of service or potentially execute code via crafted packets.
- 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-2020-2223?
OSV-2020-2223 is an use after free vulnerability in qemu, published on 4 Dec 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=28194
Crash type: Heap-use-after-free READ 8
Crash state:
e1000e_write_packet_to_guest
e1000e_receive_iov
e1000e_nc_receive_iov
Which versions are affected by OSV-2020-2223?
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-2020-2223?
No fix has been published for OSV-2020-2223 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2020-2223 being exploited?
There is no known exploitation of OSV-2020-2223 in the wild and no public exploit code.