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MEDIUM · 5.5

CVE-2021-4135

A memory leak vulnerability was found in the Linux kernel's eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called....

Vulnerability Description

A memory leak vulnerability was found in the Linux kernel's eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called. A local user could use this flaw to get unauthorized access to some data.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
LinuxLinux Kernel< 5.16

Related Weaknesses (CWE)

CWE-401CWE-200

References

FAQ

What is CVE-2021-4135?

CVE-2021-4135 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A memory leak vulnerability was found in the Linux kernel's eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called....

How severe is CVE-2021-4135?

CVE-2021-4135 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-4135?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.