CVE-2022-3521: Linux Kernel kcm kcmsock.c kcm_tx_work race condition

Modified

AliasesUBUNTU-CVE-2022-3521DEBIAN-CVE-2022-3521

Published 16-10-2022Last modified 14-10-2026

Vulnerability summary

CVE-2022-3521 is a low (CVSS 2.6) vulnerability in debian debian_linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.8% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 2.6, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

2.6/10

010

Low · v3.1 (CVE.org)

EPSS score

0.24%

0%100%

Low · +0.01 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

16-10-2022
PublishedVulnerability first disclosed.
14-10-2026
Last modifiedVulnerability information updated.

Description

A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function kcm_tx_work of the file net/kcm/kcmsock.c of the component kcm. The manipulation leads to race condition. It is recommended to apply a patch to fix this issue. VDB-211018 is the identifier assigned to this vulnerability.

CVSS metrics

5 scores · 4 sources · 2 versions

v4.05.7v3.12.6

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.23% 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-362Concurrent Execution using Shared Resource with Improper SynchronizationThe product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected systems

Version check

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

Ubuntu91 products

linux< 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
linux-allwinner-5.19All versions (No fix recorded)
linux-aws< 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
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< 5.15.0-1031.35~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1097.105~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2090.96 | All versions (No fix recorded) | < 5.4.0-1099.107+fips1
linux-aws-hwe< 4.15.0-1151.164~16.04.1
linux-azure< 4.15.0-1162.177~14.04.1 | < 4.15.0-1162.177~16.04.1 | All versions (No fix recorded) | < 5.4.0-1104.110 | < 5.15.0-1034.41
linux-azure-4.15< 4.15.0-1162.177
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1034.41~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1104.110~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fde< 5.15.0-1034.41.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fips< 4.15.0-2071.77 | All versions (No fix recorded) | < 5.4.0-1104.110+fips1
linux-bluefield< 5.4.0-1059.65 | < 5.15.0-1014.16
linux-dell300x< 4.15.0-1061.66
linux-fips< 4.15.0-1108.119 | All versions (No fix recorded) | < 5.4.0-1073.82
linux-gcp< 4.15.0-1146.162~16.04.1 | All versions (No fix recorded) | < 5.4.0-1101.110 | < 5.15.0-1030.37
linux-gcp-4.15< 4.15.0-1146.162
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1030.37~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1101.110~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2055.60 | All versions (No fix recorded) | < 5.4.0-1101.110+fips1
linux-gke< 5.4.0-1095.102 | < 5.15.0-1028.33
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1028.33~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1065.69 | < 5.15.0-1016.21
linux-gkeop-5.15< 5.15.0-1016.21~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-206.217~16.04.1 | 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< 5.15.0-67.74~20.04.1
linux-hwe-5.19< 5.19.0-35.36~22.04.1
linux-hwe-5.4< 5.4.0-144.161~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1045.50 | < 5.15.0-1026.29
linux-ibm-5.4< 5.4.0-1045.50~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1022.27
linux-intel-iotg< 5.15.0-1026.31
linux-intel-iotg-5.15< 5.15.0-1026.31~20.04.1
linux-iot< 5.4.0-1013.15
linux-kvm< 4.15.0-1136.141 | < 5.4.0-1087.93 | < 5.15.0-1029.34
linux-lowlatency< 5.15.0-67.74
linux-lowlatency-hwe-5.15< 5.15.0-67.74~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-nvidia< 5.15.0-1023.23
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oracle< 4.15.0-1115.126~16.04.1 | < 4.15.0-1115.126 | < 5.4.0-1094.103 | < 5.15.0-1030.36
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< 5.15.0-1030.36~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1094.103~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1081.92 | < 5.15.0-1025.27
linux-raspi-5.4< 5.4.0-1081.92~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2< 4.15.0-1128.136 | All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1033.36
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1030.34~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1146.156
linux-xilinx-zynqmp< 5.4.0-1022.26

Show all 91

Debian2 products

linux< 6.0.10-1
debian_linuxEOL10.0

Linux2 products

kerneln/a
linux_kernelEOL< 5.19 | 5.19 | 5.19:rc1 | 5.19:rc2

3 vendors · 95 products

References

32 links

git.kernel.org/pub/…Mailing ListPatch
vuldb.com?id.211018Permissions RequiredThird Party Advisory
lists.debian.org/debian-lts-announce/2022/12/msg00031.htmlMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2022/12/msg00034.htmlMailing ListThird Party Advisory
ubuntu.com/security/CVE-2022-3521REPORT
git.kernel.org/linus/ec7eede369fe5b0d085ac51fdbb95184f87bfc6cREPORT
ubuntu.com/security/notices/USN-5883-1Advisory
ubuntu.com/security/notices/USN-5911-1Advisory
ubuntu.com/security/notices/USN-5912-1Advisory
ubuntu.com/security/notices/USN-5917-1Advisory

Show all 32 references

ubuntu.com/security/notices/USN-5919-1Advisory
ubuntu.com/security/notices/USN-5920-1Advisory
ubuntu.com/security/notices/USN-5924-1Advisory
ubuntu.com/security/notices/USN-5925-1Advisory
ubuntu.com/security/notices/USN-5927-1Advisory
ubuntu.com/security/notices/USN-5929-1Advisory
ubuntu.com/security/notices/USN-5934-1Advisory
ubuntu.com/security/notices/USN-5935-1Advisory
ubuntu.com/security/notices/USN-5938-1Advisory
ubuntu.com/security/notices/USN-5939-1Advisory
ubuntu.com/security/notices/USN-5940-1Advisory
ubuntu.com/security/notices/USN-5941-1Advisory
ubuntu.com/security/notices/USN-5950-1Advisory
ubuntu.com/security/notices/USN-5951-1Advisory
ubuntu.com/security/notices/USN-5962-1Advisory
ubuntu.com/security/notices/USN-5975-1Advisory
ubuntu.com/security/notices/USN-6000-1Advisory
ubuntu.com/security/notices/USN-6007-1Advisory
www.cve.org/CVERecord?id=CVE-2022-3521REPORT
security-tracker.debian.org/tracker/CVE-2022-3521Advisory
nvd.nist.gov/vuln/detail/CVE-2022-3521OvalAdvisory
cert-portal.siemens.com/productcert/html/ssa-794697.html