CVE-2021-38202 Denial of service in n/a
Remote attackers can cause a denial of service via out-of-bounds read in the Linux kernel NFS server when trace events are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-38202?
CVE-2021-38202 is a high-severity denial of service vulnerability in Linux kernel, published on 8 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
fs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bounds read in strlen) by sending NFS traffic when the trace event framework is being used for nfsd.
Weakness: CWE-125
Which versions are affected by CVE-2021-38202?
It affects 5 products.
Products include Linux kernel, Netapp Element Software, Netapp Hci Bootstrap Os, Netapp Hci Management Node, Netapp Solidfire.
How do I fix CVE-2021-38202?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-38202 being exploited?
There is no known exploitation of CVE-2021-38202 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-6586, GHSA-j8f3-cxf7-rj22, UBUNTU-CVE-2021-38202.