GSD-2021-1000644 NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
A NULL pointer dereference in the Linux Kernel NFSv4 subsystem allows remote attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000644?
GSD-2021-1000644 is a vulnerability in Kernel, published on 4 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
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 v5.4.124 by commit aba3c7795f51717ae316f3566442dee7cc3eeccb, it was introduced in version v5.4.118 by commit 6be0e4b59314e4a836495f6ffdc5d2c5b079deeb. For more details please see the references link.
Which versions are affected by GSD-2021-1000644?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000644?
No fix has been published for GSD-2021-1000644 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000644 being exploited?
There is no known exploitation of GSD-2021-1000644 in the wild and no public exploit code.