5.5

CVE-2021-47122: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2021-47122DEBIAN-CVE-2021-47122
Published 15-03-2024Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2021-47122 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
USN-7415-1USN-7429-1USN-7429-2

Timeline

  1. 15-03-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: caif: fix memory leak in caif_device_notify In case of caif_enroll_dev() fail, allocated link_support won't be assigned to the corresponding structure. So simply free allocated pointer in case of error

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

0.00 pp

From 0.23% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu86 products
  • linux< 3.13.0-205.256 | < 4.4.0-267.301 | < 4.15.0-154.161 | < 5.4.0-81.91
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1142.148 | < 4.4.0-1180.195 | < 4.15.0-1110.117 | < 5.4.0-1055.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8 | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < 9348c1f10932f13b299cbc8b1bd5f780751fae49 | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < 4bca2034b41c15b62d47a19158bb76235fd4455d | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < 3be863c11cab725add9fef4237ed4e232c3fc3bb | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < f52f4fd67264c70cd0b4ba326962ebe12d9cba94 | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < af2806345a37313f01b1c9f15e046745b8ee2daa | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < 6a0e317f61094d377335547e015dd2ff12caf893 | ≥ 7c18d2205ea76eef9674e59e1ecae4f332a53e9e, < b53558a950a89824938e9811eddfc8efcd94e1bb | 3.3
  • linux_kernel≥ 3.3, < 4.4.272 | ≥ 4.5, < 4.9.272 | ≥ 4.10, < 4.14.236 | ≥ 4.15, < 4.19.194 | ≥ 4.20, < 5.4.125 | ≥ 5.5, < 5.10.43 | ≥ 5.11, < 5.12.10 | 5.13:rc1 | 5.13:rc2 | 5.13:rc3 | 5.13:rc4
Debian1 product
  • linux< 5.10.46-1

3 vendors · 89 products

References

15 links
Show all 15 references