CVE-2020-15859 Use after free in n/a
A guest OS user can trigger a use-after-free in QEMU's e1000e network device emulation, potentially leading to code execution or privilege escalation on the host.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-15859?
CVE-2020-15859 is a low-severity use after free vulnerability in Debian Debian Linux, published on 21 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.
Weakness: CWE-416
Which versions are affected by CVE-2020-15859?
It affects 2 products.
Products include Debian Debian Linux, Qemu Qemu.
How do I fix CVE-2020-15859?
Apply the vendor's patch.
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 CVE-2020-15859 being exploited?
There is no known exploitation of CVE-2020-15859 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2020-15859, GHSA-xvx4-fr25-r858, UBUNTU-CVE-2020-15859.