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CVE-2021-4135

Date: July 14, 2022

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.

Severity Score

Related Resources (6)

https://access.redhat.com/security/cve/CVE-2021-4135
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-4135
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=481221775d53
https://nvd.nist.gov/vuln/detail/CVE-2021-4135
https://security-tracker.debian.org/tracker/CVE-2021-4135
https://www.mend.io/vulnerability-database/CVE-2021-4135

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Missing Release of Memory after Effective Lifetime

CWE-401

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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