CVE-2020-25661 Memory corruption in kernel
A remote attacker in adjacent range can crash the system or execute arbitrary code via crafted Bluetooth L2CAP packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-25661?
CVE-2020-25661 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 5 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A Red Hat only CVE-2020-12351 regression issue was found in the way the Linux kernel's Bluetooth implementation handled L2CAP packets with A2MP CID. This flaw allows a remote attacker in an adjacent range to crash the system, causing a denial of service or potentially executing arbitrary code on the system by sending a specially crafted L2CAP packet. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Weakness: CWE-843
Which versions are affected by CVE-2020-25661?
It affects 1 product.
Products include Redhat Enterprise Linux.
How do I fix CVE-2020-25661?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-25661 being exploited?
There is no known exploitation of CVE-2020-25661 in the wild and no public exploit code.
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- CVE-2018-25011 Memory corruption in libwebp
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- CVE-2014-3585 Supply chain in redhat-upgrade-tool
Sources
Also known as GHSA-5jpw-97pv-5g28, UBUNTU-CVE-2020-25661.