CVE-2022-32296: linux linux_kernel Use of Insufficiently Random Values

Modified

AliasesUBUNTU-CVE-2022-32296DEBIAN-CVE-2022-32296

Published 05-06-2022Last modified 14-10-2026

Vulnerability summary

CVE-2022-32296 is a low (CVSS 3.3) Use of Insufficiently Random Values vulnerability in linux linux_kernel. EPSS estimates a 0.44% chance of exploitation in the next 30 days, higher than 38.1% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 3.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

3.3/10

010

Low · v3.1 (NVD)

EPSS score

0.44%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 22 · Related 20

Timeline

05-06-2022
PublishedVulnerability first disclosed.
14-10-2026
Last modifiedVulnerability information updated.

Description

The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.

CVSS metrics

5 scores · 3 sources · 3 versions

v4.02.3v3.13.3v2.02.1

EPSS trend

Probability

0.44%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.44% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-330Use of Insufficiently Random ValuesThe product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu84 products

linuxAll versions (No fix recorded) | < 4.15.0-194.205 | < 5.4.0-126.142 | < 5.15.0-47.51
linux-awsAll versions (No fix recorded) | < 4.15.0-1142.154 | < 5.4.0-1085.92 | < 5.15.0-1019.23
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)

linux-aws-5.15< 5.15.0-1019.23~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1085.92~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2081.87 | All versions (No fix recorded) | < 5.4.0-1085.92+fips1
linux-aws-hwe< 4.15.0-1142.154~16.04.1
linux-azure< 4.15.0-1153.168~14.04.1 | < 4.15.0-1153.168~16.04.1 | All versions (No fix recorded) | < 5.4.0-1091.96 | < 5.15.0-1019.24
linux-azure-4.15< 4.15.0-1153.168
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1019.24~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1091.96~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fde-5.15< 5.15.0-1114.123~20.04.1
linux-azure-fips< 4.15.0-2062.68 | All versions (No fix recorded) | < 5.4.0-1091.96+fips1
linux-bluefield< 5.4.0-1046.51
linux-dell300x< 4.15.0-1054.59
linux-fipsAll versions (No fix recorded) | < 4.15.0-1099.110 | < 5.4.0-1061.69
linux-gcp< 4.15.0-1137.153~16.04.1 | All versions (No fix recorded) | < 5.4.0-1089.97 | < 5.15.0-1017.23
linux-gcp-4.15< 4.15.0-1137.153
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1017.23~20.04.2
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1089.97~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2047.52 | All versions (No fix recorded) | < 5.4.0-1089.97+fips1
linux-gke< 5.4.0-1083.89 | < 5.15.0-1015.18
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1015.18~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1053.56 | < 5.15.0-1002.4
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-194.205~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-48.54~20.04.1
linux-hwe-5.4< 5.4.0-126.142~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1033.37 | < 5.15.0-1013.15
linux-ibm-5.4< 5.4.0-1033.37~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded)
linux-intel-iotg< 5.15.0-1013.17
linux-intel-iotg-5.15< 5.15.0-1015.20~20.04.2
linux-iot< 5.4.0-1004.6
linux-kvmAll versions (No fix recorded) | < 4.15.0-1128.133 | < 5.4.0-1075.80 | < 5.15.0-1017.21
linux-lowlatency< 5.15.0-47.53
linux-lowlatency-hwe-5.15< 5.15.0-48.54~20.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1007.7
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14< 5.14.0-1044.49
linux-oem-5.17< 5.17.0-1011.12
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oracle< 4.15.0-1107.118~16.04.1 | < 4.15.0-1107.118 | < 5.4.0-1083.91 | < 5.15.0-1017.22
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1017.22~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1083.91~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1070.80 | < 5.15.0-1014.16
linux-raspi-5.4< 5.4.0-1070.80~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1120.128 | All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1020.20
linux-riscvAll versions (No fix recorded) | < 5.15.0-1018.21
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1018.21~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1138.148