GSD-2021-1002105 mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()
A NULL pointer dereference in the Linux kernel secretmem subsystem can cause a system crash, requiring a kernel patch to resolve.
- 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-2021-1002105?
GSD-2021-1002105 is a vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()
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 v5.14.15 by commit b77ba1e02345bafd703f0d407bdbd88c3be1f767, it was introduced in version v5.14 by commit 1507f51255c9ff07d75909a84e7c0d7f3c4b2f49. For more details please see the references link.
Which versions are affected by GSD-2021-1002105?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002105?
No fix has been published for GSD-2021-1002105 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002105 being exploited?
There is no known exploitation of GSD-2021-1002105 in the wild and no public exploit code.