GSD-2023-1000518 block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq
A use-after-free vulnerability in the Linux Kernel BFQ I/O scheduler allows local attackers to potentially execute code or escalate privileges.
- 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-2023-1000518?
GSD-2023-1000518 is an use after free vulnerability in Kernel, published on 17 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq
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 v6.0.17 by commit cfe5b38c37720313eff0dec5517442c7ab3c9a20, it was introduced in version v6.0.16 by commit b22fd72bfebda3956efc4431b60ddfc0a51e03e0. For more details please see the references link.
Which versions are affected by GSD-2023-1000518?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000518?
No fix has been published for GSD-2023-1000518 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-2023-1000518 being exploited?
There is no known exploitation of GSD-2023-1000518 in the wild and no public exploit code.