CVE-2023-23039 Use after free in n/a
A race condition in the Linux kernel VCC driver allows a local attacker to trigger a use-after-free, potentially leading to code execution or privilege escalation.
- 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-2023-23039?
CVE-2023-23039 is a medium-severity use after free vulnerability in Linux kernel, published on 22 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Linux kernel through 6.2.0-rc2. drivers/tty/vcc.c has a race condition and resultant use-after-free if a physically proximate attacker removes a VCC device while calling open(), aka a race condition between vcc_open() and vcc_remove().
Weakness: CWE-362
Which versions are affected by CVE-2023-23039?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-23039?
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-2023-23039 being exploited?
There is no known exploitation of CVE-2023-23039 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-13820, DEBIAN-CVE-2023-23039, GHSA-hr7h-xh5g-347q, ROOT-OS-DEBIAN-11-CVE-2023-23039, ROOT-OS-DEBIAN-12-CVE-2023-23039, ROOT-OS-DEBIAN-13-CVE-2023-23039.