GSD-2021-1001526 bpf: Fix integer overflow in prealloc_elems_and_freelist()
An integer overflow in the Linux kernel BPF subsystem allows local attackers to potentially escalate privileges or execute code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1001526?
GSD-2021-1001526 is a vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
bpf: Fix integer overflow in prealloc_elems_and_freelist()
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 v4.14.251 by commit f34bcd10c4832d491049905d25ea3f46a410c426, it was introduced in version v4.6 by commit 557c0c6e7df8e14a46bd7560d193fa5bbc00a858. For more details please see the references link.
Which versions are affected by GSD-2021-1001526?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001526?
No fix has been published for GSD-2021-1001526 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001526 being exploited?
There is no known exploitation of GSD-2021-1001526 in the wild and no public exploit code.