CVE-2021-47426

MEDIUMNVD 5.55.5—

5.5

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 v3: 5.5
EG Score: 5.5(medium)
EPSS: 8.3%
KEV: Not listed

Published

May 21, 2024

Last Modified

December 31, 2024

References (8)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/29fdb11ca88d3c490a3d56f0dc77eb9444d086be
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/686cb8b9f6b46787f035afe8fbd132a74e6b1bdd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a326f9c01cfbee4450ae49ce618ae6cbc0f76842
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d590a410e472417a22336c7c37685bfb38e801f2
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/29fdb11ca88d3c490a3d56f0dc77eb9444d086be
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/686cb8b9f6b46787f035afe8fbd132a74e6b1bdd
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a326f9c01cfbee4450ae49ce618ae6cbc0f76842
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d590a410e472417a22336c7c37685bfb38e801f2

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-401Missing Release of Memory after Effective Lifetime (Memory Leak)

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 01:29 UTCEG score recompute
2026-05-24 01:29 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-47426?

CVE-2021-47426 is a medium vulnerability published on May 21, 2024. 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.

When was CVE-2021-47426 disclosed?

CVE-2021-47426 was first published in the National Vulnerability Database on May 21, 2024, with the most recent update on December 31, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-47426 actively exploited?

CVE-2021-47426 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-47426?

CVE-2021-47426 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2021-47426?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47426, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-47426

Explore →

Is Your Infrastructure Affected by CVE-2021-47426?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-47426

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-47426?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)