GSD-2021-1000891 spi: bcm2835: Fix out-of-bounds access with more than 4 slaves
Out-of-bounds access in the BCM2835 SPI driver allows local attackers with high privileges to cause memory corruption or denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000891?
GSD-2021-1000891 is a memory corruption vulnerability in Kernel, published on 30 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
spi: bcm2835: Fix out-of-bounds access with more than 4 slaves
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.126 by commit b5502580cf958b094f3b69dfe4eece90eae01fbc, it was introduced in version v5.4 by commit 571e31fa60b3697d5db26140e16d5c45c51c9815. For more details please see the references link.
Which versions are affected by GSD-2021-1000891?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000891?
No fix has been published for GSD-2021-1000891 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000891 being exploited?
There is no known exploitation of GSD-2021-1000891 in the wild and no public exploit code.