CVE-2021-20322Not scoredCWE-330

CVE-2021-20322: Linux kernel vulnerability

Linux · kernel

Vendor fix available · Affected: Linux kernel · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

6.9%probability of exploitation in the next 30 days

94th percentile

050100

Higher than 94% of scored CVEs

Not scored yet. The CVE record carries no CVSS score.

DescriptionCVE.org

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

kernelfrom 4.15 before 4.19.215; from 4.20 before 5.4.146; from 5.5 before 5.10.65; from 5.11 before 5.13.17; from 5.14 before 5.14.4

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Use of Insufficiently Random Values · Cryptography
Vendor: Linux
Published: February 2022
Band: Possible (1 to 10%), February 2022

CoverageNo articles yet

No CyberSIXT article names CVE-2021-20322 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.