GSD-2021-1000988 net: ipv4: fix memory leak in ip_mc_add1_src
A memory leak in the Linux kernel IPv4 multicast source handling allows local attackers to cause denial of service.
- 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-2021-1000988?
GSD-2021-1000988 is a memory corruption 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
net: ipv4: fix memory leak in ip_mc_add1_src
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 v5.10.46 by commit ac31cc837cafb57a271babad8ccffbf733caa076, it was introduced in version v4.9 by commit 24803f38a5c0b6c57ed800b47e695f9ce474bc3a. For more details please see the references link.
Which versions are affected by GSD-2021-1000988?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000988?
No fix has been published for GSD-2021-1000988 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000988 being exploited?
There is no known exploitation of GSD-2021-1000988 in the wild and no public exploit code.