GSD-2021-1001191 nfs: fix acl memory leak of posix_acl_create()
A memory leak in the Linux Kernel NFS ACL handling allows attackers to cause a denial of service by exhausting system memory.
- 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-2021-1001191?
GSD-2021-1001191 is a memory corruption vulnerability in Kernel, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
nfs: fix acl memory leak of posix_acl_create()
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 v5.13.4 by commit 687cf32865b2d6960214bce523f2afac58dd3cd2, it was introduced in version v3.14 by commit 013cdf1088d7235da9477a2375654921d9b9ba9f. For more details please see the references link.
Which versions are affected by GSD-2021-1001191?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001191?
No fix has been published for GSD-2021-1001191 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-2021-1001191 being exploited?
There is no known exploitation of GSD-2021-1001191 in the wild and no public exploit code.