8.4

CVE-2021-47313: cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init

Analyzed
AliasesUBUNTU-CVE-2021-47313
Published 21-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47313 is a high (CVSS 8.4) Uncontrolled Resource Consumption vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.4, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.26%
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 1
RHSA-2022:7683

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init It's a classic example of memleak, we allocate something, we fail and never free the resources. Make sure we free all resources on policy ->init() failures.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.26% 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

Affected systems

Version check

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

Ubuntu62 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • 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-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ a28b2bfc099c6b9caa6ef697660408e076a32019, < b775383355755885b19d2acef977f1ca132e80a3 | ≥ a28b2bfc099c6b9caa6ef697660408e076a32019, < e1b2b2b61d30d7ce057ec17237c217d152ed97f2 | ≥ a28b2bfc099c6b9caa6ef697660408e076a32019, < fe2535a44904a77615a3af8e8fd7dafb98fb0e1b | 5.11
  • linux_kernel≥ 5.11, < 5.12.19 | ≥ 5.13, < 5.13.4

2 vendors · 64 products

References

6 links