What is CVE-2021-4135?

CVE-2021-4135 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2022-07-14.

How severe is CVE-2021-4135?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Linux Kernel

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. A local user could use this flaw to get unauthorized access to some data.

Vulnerability class: Information Disclosure

EPSS: 0.002 (14.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Linux Linux_kernel — versions 5.16
N/a Kernel — versions Linux kernel versions prior to 5.16-rc6

Weakness classification (CWE)

References

secalert@redhat.com (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-4135?: CVE-2021-4135 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2022-07-14.
How severe is CVE-2021-4135?: Medium severity. CVSS v3 base score is 5.5 out of 10.