CVE-2021-20239 — LOW (3.3) — White Hats Nepal

Q: How severe is CVE-2021-20239?

CVE-2021-20239 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-20239?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux, Fedoraproject Fedora.

Vulnerability Description

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality.

CVSS Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	< 5.4.92
Redhat	Enterprise Linux	5.0
Fedoraproject	Fedora	33

Related Weaknesses (CWE)

CWE-119 CWE-822

References

https://bugzilla.redhat.com/show_bug.cgi?id=1923636Issue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1923636Issue TrackingThird Party Advisory

FAQ

What is CVE-2021-20239?

CVE-2021-20239 is a vulnerability with a CVSS score of 3.3 (LOW). A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest t...

How severe is CVE-2021-20239?

CVE-2021-20239 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20239?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux, Fedoraproject Fedora.