CVE-2021-38199
First published: Sun Aug 08 2021(Updated: )
fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.13.4 | |
| All of | ||
| NetApp Bootstrap OS | ||
| NetApp HCI Compute Node | ||
| NetApp SolidFire & HCI Management Node | ||
| NetApp SolidFire & HCI Storage Node | ||
| All of | ||
| NetApp Management Services for Element Software | ||
| NetApp HCI Storage Nodes | ||
| Debian Linux | =9.0 | |
| Debian Linux | =11.0 | |
| NetApp Bootstrap OS | ||
| NetApp HCI Compute Node | ||
| NetApp Management Services for Element Software | ||
| NetApp HCI Storage Nodes | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://github.com/torvalds/linux/commit/dd99e9f98fbf423ff6d365b37a98e8879170f17c
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://security.netapp.com/advisory/ntap-20210902-0010/
- https://www.debian.org/security/2021/dsa-4978
- https://launchpad.net/bugs/cve/CVE-2021-38199
- https://git.kernel.org/linus/dd99e9f98fbf423ff6d365b37a98e8879170f17c
- https://security-tracker.debian.org/tracker/CVE-2021-38199
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38199
- https://nvd.nist.gov/vuln/detail/CVE-2021-38199
- https://ubuntu.com/security/CVE-2021-38199
Frequently Asked Questions
What is the severity of CVE-2021-38199?
CVE-2021-38199 has a medium severity rating due to its potential to cause denial of service.
How do I fix CVE-2021-38199?
To fix CVE-2021-38199, upgrade your Linux kernel to version 5.13.4 or later.
Which systems are affected by CVE-2021-38199?
CVE-2021-38199 affects Linux kernel versions prior to 5.13.4, including Debian Linux 9.0 and 11.0.
What types of attacks could exploit CVE-2021-38199?
CVE-2021-38199 could be exploited by operators of remote NFSv4 servers to induce denial of service by making mounts unreachable.
Is there a patch available for CVE-2021-38199?
Yes, a patch for CVE-2021-38199 is included in the updates for the Linux kernel from version 5.13.4 onward.
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