GSD-2021-1000285 spi: Fix use-after-free with devm_spi_alloc_*
A use-after-free vulnerability in the Linux kernel SPI driver allows local attackers to potentially execute code or cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000285?
GSD-2021-1000285 is an use after free vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
spi: Fix use-after-free with devm_spi_alloc_*
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 v5.12.4 by commit 8735248ebb918d25427965f0db07939ed0473ec6, it was introduced in version v5.10 by commit 5e844cc37a5cbaa460e68f9a989d321d63088a89. For more details please see the references link.
Which versions are affected by GSD-2021-1000285?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000285?
No fix has been published for GSD-2021-1000285 yet. Limit exposure of the affected software until one is available.
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 GSD-2021-1000285 being exploited?
There is no known exploitation of GSD-2021-1000285 in the wild and no public exploit code.