GSD-2021-1001067 bpf: Fix leakage under speculation on mispredicted branches
A local attacker can exploit speculative execution flaws in the Linux kernel BPF subsystem to leak sensitive memory data.
- 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-2021-1001067?
GSD-2021-1001067 is a 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
bpf: Fix leakage under speculation on mispredicted branches
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 v5.12.13 by commit 4a99047ed51c98a09a537fe2c12420d815dfe296, it was introduced in version v4.15 by commit b2157399cc9898260d6031c5bfe45fe137c1fbe7. For more details please see the references link.
Which versions are affected by GSD-2021-1001067?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001067?
No fix has been published for GSD-2021-1001067 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001067 being exploited?
There is no known exploitation of GSD-2021-1001067 in the wild and no public exploit code.