CVE-2021-1042 Use after free in Android
A use-after-free flaw in the Android kernel allows local attackers with system privileges to disclose freed heap memory.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-1042?
CVE-2021-1042 is a medium-severity use after free vulnerability in Google Android, published on 15 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In dsi_panel_debugfs_read_cmdset of dsi_panel.c, there is a possible disclosure of freed kernel heap memory due to a use after free. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-187851056References: N/A
Weakness: CWE-416
Which versions are affected by CVE-2021-1042?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-1042?
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-2021-1042 being exploited?
There is no known exploitation of CVE-2021-1042 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-187851056, GHSA-vq7q-g9c7-hj87, PUB-A-187851056.