CVE-2026-93147

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. 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
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

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

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

s390/bpf: Replace ly instruction with llgf

cpu_nr is a 32 bit value and BPF_REG_0 is a 64 bit register, when ly loads the cpu_nr into BPF_REG_0 it does not zero the upper bits, but llgf does.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

s390/bpf: Replace ly instruction with llgf - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f6cc299938b561cb01e343bab7042611fcee12a
generic

s390/bpf: Replace ly instruction with llgf - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/88500a86ab79f01c568de6ed00f5b1c5c79f11d5

Vendor Advisories for CVE-2026-93147(1)

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 27× in last 7d / 73× 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. 2026-10-05 08:14 UTCEG score recompute
  2. 2026-10-05 08:14 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 20:55 UTCGHSA enrichment
  5. 2026-10-04 09:36 UTCGHSA enrichment
  6. 2026-10-03 22:17 UTCEG score recompute
  7. 2026-10-03 22:17 UTCGHSA enrichment
  8. 2026-10-03 10:57 UTCGHSA enrichment
  9. 2026-10-02 23:38 UTCEG score recompute
  10. 2026-10-02 23:38 UTCGHSA enrichment
  11. 2026-10-02 12:17 UTCGHSA enrichment
  12. 2026-10-02 00:08 UTCEG score recompute
  13. 2026-10-02 00:08 UTCGHSA enrichment
  14. 2026-10-01 19:51 UTCEPSS rescore
  15. 2026-10-01 12:13 UTCGHSA enrichment
  16. 2026-10-01 00:55 UTCEG score recompute
  17. 2026-10-01 00:55 UTCGHSA enrichment
  18. 2026-09-30 15:04 UTCEPSS rescore
  19. 2026-09-30 13:37 UTCGHSA enrichment
  20. 2026-09-30 02:18 UTCGHSA enrichment
  21. 2026-09-29 15:00 UTCGHSA enrichment
  22. 2026-09-29 03:42 UTCEG score recompute
  23. 2026-09-29 03:42 UTCGHSA enrichment
  24. 2026-09-28 16:24 UTCEG score recompute
  25. 2026-09-28 16:24 UTCGHSA enrichment
Show 48 more
  1. 2026-09-28 13:52 UTCEPSS rescore
  2. 2026-09-28 13:52 UTCEPSS rescore
  3. 2026-09-28 05:06 UTCGHSA enrichment
  4. 2026-09-27 17:48 UTCEG score recompute
  5. 2026-09-27 17:48 UTCGHSA enrichment
  6. 2026-09-27 13:49 UTCEPSS rescore
  7. 2026-09-27 06:29 UTCGHSA enrichment
  8. 2026-09-26 19:06 UTCEG score recompute
  9. 2026-09-26 19:05 UTCGHSA enrichment
  10. 2026-09-26 15:59 UTCEPSS rescore
  11. 2026-09-26 07:45 UTCEG score recompute
  12. 2026-09-26 07:45 UTCGHSA enrichment
  13. 2026-09-25 20:26 UTCGHSA enrichment
  14. 2026-09-25 09:04 UTCGHSA enrichment
  15. 2026-09-24 21:46 UTCEG score recompute
  16. 2026-09-24 21:46 UTCGHSA enrichment
  17. 2026-09-24 14:04 UTCEPSS rescore
  18. 2026-09-24 10:28 UTCGHSA enrichment
  19. 2026-09-23 23:09 UTCEG score recompute
  20. 2026-09-23 23:09 UTCGHSA enrichment
  21. 2026-09-23 17:54 UTCEPSS rescore
  22. 2026-09-23 11:32 UTCGHSA enrichment
  23. 2026-09-23 00:14 UTCEG score recompute
  24. 2026-09-23 00:14 UTCGHSA enrichment
  25. 2026-09-22 16:01 UTCEPSS rescore
  26. 2026-09-22 12:55 UTCGHSA enrichment
  27. 2026-09-22 01:37 UTCEG score recompute
  28. 2026-09-22 01:37 UTCGHSA enrichment
  29. 2026-09-21 21:09 UTCEPSS rescore
  30. 2026-09-21 14:19 UTCGHSA enrichment
  31. 2026-09-21 03:00 UTCEG score recompute
  32. 2026-09-21 03:00 UTCGHSA enrichment
  33. 2026-09-20 20:16 UTCEPSS rescore
  34. 2026-09-20 15:41 UTCGHSA enrichment
  35. 2026-09-20 04:23 UTCGHSA enrichment
  36. 2026-09-19 17:04 UTCEG score recompute
  37. 2026-09-19 17:04 UTCGHSA enrichment
  38. 2026-09-19 05:44 UTCEG score recompute
  39. 2026-09-19 05:44 UTCGHSA enrichment
  40. 2026-09-18 19:28 UTCEPSS rescore
  41. 2026-09-18 18:26 UTCEG score recompute
  42. 2026-09-18 18:26 UTCGHSA enrichment
  43. 2026-09-18 18:00 UTCEG score recompute▲ 7.80
  44. 2026-09-18 18:00 UTCGHSA enrichment
  45. 2026-09-18 17:59 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  46. 2026-09-17 17:24 UTCNVD update
  47. 2026-09-17 16:21 UTCEG score recompute
  48. 2026-09-17 16:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-93147?
CVE-2026-93147 is a high vulnerability published on September 17, 2026. In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Replace ly instruction with llgf cpunr is a 32 bit value and BPFREG_0 is a 64 bit register, when ly loads the cpunr into BPFREG_0 it does not zero the upper bits, but llgf does.
When was CVE-2026-93147 disclosed?
CVE-2026-93147 was first published on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93147 actively exploited?
CVE-2026-93147 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-93147?
CVE-2026-93147 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-93147?
No fix for CVE-2026-93147 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-93147 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-93147

Explore →

Is Your Infrastructure Affected by CVE-2026-93147?

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

Book a Demo →Browse All CVEs