5.5

CVE-2021-47426: bpf, s390: Fix potential memory leak about jit_data

Analyzed
AliasesUBUNTU-CVE-2021-47426DEBIAN-CVE-2021-47426
Published 21-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47426 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
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 7 · Related 7
SUSE-SU-2024:2008-1SUSE-SU-2024:2010-1SUSE-SU-2024:2011-1SUSE-SU-2024:2019-1SUSE-SU-2024:2185-1SUSE-SU-2024:2189-1

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: bpf, s390: Fix potential memory leak about jit_data Make sure to free jit_data through kfree() in the error path.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% 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, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu83 products
  • linux< 5.4.0-92.103
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 1c8f9b91c456f5b47a377a0c8c5d4130fc39433a, < a326f9c01cfbee4450ae49ce618ae6cbc0f76842 | ≥ 1c8f9b91c456f5b47a377a0c8c5d4130fc39433a, < 29fdb11ca88d3c490a3d56f0dc77eb9444d086be | ≥ 1c8f9b91c456f5b47a377a0c8c5d4130fc39433a, < d590a410e472417a22336c7c37685bfb38e801f2 | ≥ 1c8f9b91c456f5b47a377a0c8c5d4130fc39433a, < 686cb8b9f6b46787f035afe8fbd132a74e6b1bdd | 5.4
  • linux_kernel≥ 5.4, < 5.4.153 | ≥ 5.5, < 5.10.73 | ≥ 5.11, < 5.14.12 | 5.15:rc1 | 5.15:rc2 | 5.15:rc3 | 5.15:rc4
Debian1 product
  • linux< 5.14.12-1

3 vendors · 86 products

References

8 links