CVE-2021-0947 Information disclosure in Android
An attacker can read uninitialized kernel heap data via a missing initialization check in the Android kernel, potentially exposing sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-0947?
CVE-2021-0947 is a high-severity vulnerability in Google Android, published on 24 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The method PVRSRVBridgeTLDiscoverStreams allocates puiStreamsInt on the heap, fills the contents of the buffer via TLServerDiscoverStreamsKM, and then copies the buffer to userspace. The method TLServerDiscoverStreamsKM may fail for several reasons including invalid sizes. If this method fails the buffer will be left uninitialized and despite the error will still be copied to userspace. Kernel leak of uninitialized heap data with no privs required.Product: AndroidVersions: Android SoCAndroid ID: A-236838960
Weakness: CWE-909
Which versions are affected by CVE-2021-0947?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2021-0947?
Apply the vendor's patch.
Is CVE-2021-0947 being exploited?
There is no known exploitation of CVE-2021-0947 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as A-236838960, ASB-A-236838960, GHSA-mfxv-hqxp-fr38.