CVE-2023-33203 Use after free in n/a
A local attacker with physical access can trigger a use-after-free in the Qualcomm EMAC driver by unplugging the device, 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-2023-33203?
CVE-2023-33203 is a medium-severity use after free vulnerability in Linux kernel, published on 18 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Linux kernel before 6.2.9 has a race condition and resultant use-after-free in drivers/net/ethernet/qualcomm/emac/emac.c if a physically proximate attacker unplugs an emac based device.
Weakness: CWE-362
Which versions are affected by CVE-2023-33203?
It affects 2 products.
Products include Linux kernel, Redhat Enterprise Linux.
How do I fix CVE-2023-33203?
Upgrade to a fixed version.
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-2023-33203 being exploited?
There is no known exploitation of CVE-2023-33203 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-26796, CVE-2023-2483, DEBIAN-CVE-2023-33203, GHSA-jh2m-9m55-5q8v, UBUNTU-CVE-2023-33203.