CVE-2026-53110

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

s390/bpf: Zero-extend bpf prog return values and kfunc arguments

s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend signed return values.

s390 BPF JIT currently implements only sign extension. Fix this omission and implement zero extension too.

CVSS v3
7.8
EG Score
7.8(high)
EPSS
2.1%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 28, 2026

Advisory Details (5)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

s390/bpf: Zero-extend bpf prog return values and kfunc arguments - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/edc90a12073b9a530064a99945c183dde120cb99
generic

s390/bpf: Zero-extend bpf prog return values and kfunc arguments - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/834918a77be51419383bf1dda9f02b81ecf26b34
generic

s390/bpf: Zero-extend bpf prog return values and kfunc arguments - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/44c4f999b03f55debb1a0c5ab5c1796895a1adf8
generic

s390/bpf: Zero-extend bpf prog return values and kfunc arguments - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/366b0e05ee24f5ba62bdc7ec1346038258b9a797
generic

s390/bpf: Zero-extend bpf prog return values and kfunc arguments - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/202e42e4aa890172366354b233c42c73107a3f59

Vendor Advisories for CVE-2026-53110(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 32× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 23:12 UTCEG score recompute
  2. 2026-07-06 23:12 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 11:20 UTCEG score recompute
  6. 2026-07-06 11:20 UTCGHSA enrichment
  7. 2026-07-05 22:41 UTCEG score recompute
  8. 2026-07-05 22:41 UTCGHSA enrichment
  9. 2026-07-05 10:49 UTCEG score recompute
  10. 2026-07-05 10:49 UTCGHSA enrichment
  11. 2026-07-04 22:56 UTCEG score recompute
  12. 2026-07-04 22:56 UTCGHSA enrichment
  13. 2026-07-04 11:03 UTCEG score recompute
  14. 2026-07-04 11:03 UTCGHSA enrichment
  15. 2026-07-03 23:11 UTCEG score recompute
  16. 2026-07-03 23:11 UTCGHSA enrichment
  17. 2026-07-03 11:07 UTCEG score recompute
  18. 2026-07-03 11:07 UTCGHSA enrichment
  19. 2026-07-02 23:13 UTCEG score recompute
  20. 2026-07-02 23:13 UTCGHSA enrichment
  21. 2026-07-02 11:21 UTCEG score recompute
  22. 2026-07-02 11:21 UTCGHSA enrichment
  23. 2026-07-01 23:28 UTCEG score recompute
  24. 2026-07-01 23:28 UTCGHSA enrichment
  25. 2026-07-01 15:07 UTCEPSS rescore
Show 19 more
  1. 2026-07-01 11:36 UTCEG score recompute
  2. 2026-07-01 11:36 UTCGHSA enrichment
  3. 2026-06-30 23:45 UTCEG score recompute
  4. 2026-06-30 23:45 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 11:40 UTCEG score recompute▲ 7.80
  7. 2026-06-30 11:39 UTCGHSA enrichment
  8. 2026-06-29 14:06 UTCEPSS rescore
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-28 14:07 UTCEPSS rescore
  11. 2026-06-28 07:52 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  12. 2026-06-28 04:56 UTCEPSS rescore
  13. 2026-06-28 04:56 UTCEPSS rescore
  14. 2026-06-27 14:53 UTCEG score recompute
  15. 2026-06-27 14:53 UTCGHSA enrichment
  16. 2026-06-27 03:08 UTCEPSS rescore
  17. 2026-06-25 13:49 UTCEPSS rescore
  18. 2026-06-24 18:10 UTCEG score recompute
  19. 2026-06-24 18:03 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-53110?
CVE-2026-53110 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Zero-extend bpf prog return values and kfunc arguments s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend…
When was CVE-2026-53110 disclosed?
CVE-2026-53110 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53110 actively exploited?
CVE-2026-53110 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53110?
CVE-2026-53110 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-53110?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53110, 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

Explore the affected products and dependency analysis for CVE-2026-53110

Explore →

Is Your Infrastructure Affected by CVE-2026-53110?

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

Start Free Scan →Browse All CVEs