Vulnerability Description
An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.0, < 4.4.269 |
| Fedoraproject | Fedora | 35 |
| Netapp | H300E Firmware | - |
| Netapp | H300E | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500E Firmware | - |
| Netapp | H500E | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700E Firmware | - |
| Netapp | H700E | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H410S Firmware | - |
| Netapp | H410S | - |
| Oracle | Communications Cloud Native Core Binding Support Function | 22.1.1 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2034342Issue TrackingThird Party Advisory
- https://lore.kernel.org/lkml/20210517140244.822185482%40linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220602-0007/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2034342Issue TrackingThird Party Advisory
- https://lore.kernel.org/lkml/20210517140244.822185482%40linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220602-0007/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
FAQ
What is CVE-2021-4157?
CVE-2021-4157 is a vulnerability with a CVSS score of 8.0 (HIGH). An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS...
How severe is CVE-2021-4157?
CVE-2021-4157 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-4157?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Netapp H300E Firmware, Netapp H300E, Netapp H300S Firmware.