GSD-2023-1000972 media: dvbdev: fix refcnt bug
A reference counting bug in the Linux kernel DVB subsystem can lead to use-after-free, potentially allowing local attackers to escalate privileges or cause a system crash.
- 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-2023-1000972?
GSD-2023-1000972 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
media: dvbdev: fix refcnt bug
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 v5.15.86 by commit 2471a44769b53effd8f602ac87ca47a5d8710edb, it was introduced in version v5.15.86 by commit 88a6f8a72d167294c0931c7874941bf37a41b6dd. For more details please see the references link.
Which versions are affected by GSD-2023-1000972?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2023-1000972?
No fix has been published for GSD-2023-1000972 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-2023-1000972 being exploited?
There is no known exploitation of GSD-2023-1000972 in the wild and no public exploit code.