CVE-2026-98062

MEDIUMNVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-09-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.5Exploit: 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:

bpf: Mark signal tracepoint siginfo arguments as scalar

The signal_generate and signal_deliver tracepoints declare their info argument as a struct kernel_siginfo pointer. btf_ctx_access() therefore treats it as a trusted pointer for tp_btf programs.

Signal delivery also uses SEND_SIG_NOINFO and SEND_SIG_PRIV as special values for this argument. Those values are zero and one respectively, and are not pointers. A tp_btf program can currently dereference either value and fault the kernel. In particular, signal_generate can run from timer interrupt context, turning the fault into a kernel panic.

Record both tracepoints in raw_tp_null_args[] and mark argument one as a non-pointer. This preserves scalar access to the cookie while rejecting direct and helper-mediated pointer use. Merely marking it nullable would not suffice because SEND_SIG_PRIV is nonzero.

CVSS v3
5.5
EG Score
5.5MEDIUMhigh confidence
EG Risk
29
EG Risk 29/100CISA 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
Severity55% × 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
0.1%
EPSS %ILE
1st
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 25, 2026

Last Modified

October 2, 2026

Advisory Details (3)

Auto-updated Oct 2, 2026
No patch confirmed yet.
generic

bpf: Mark signal tracepoint siginfo arguments as scalar - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d2eaea3599bcce659ce91862254dc91bcbdb6351
generic

bpf: Mark signal tracepoint siginfo arguments as scalar - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/77515ab12e4983e6416f8c35039a3f0c0822ac70
generic

bpf: Mark signal tracepoint siginfo arguments as scalar - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0e78cb242a57e481061fcb542fed4d51afba25c4

Vendor Advisories for CVE-2026-98062(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 20× 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. 2026-10-03 16:51 UTCEG score recompute
  2. 2026-10-03 16:51 UTCGHSA enrichment
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-02 17:57 UTCEPSS rescore
  5. 2026-10-02 15:23 UTCEG score recompute▲ 5.50
  6. 2026-10-02 15:23 UTCGHSA enrichment
  7. 2026-10-02 15:22 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  8. 2026-10-01 19:51 UTCEPSS rescore
  9. 2026-09-30 15:04 UTCEPSS rescore
  10. 2026-09-30 14:35 UTCEG score recompute
  11. 2026-09-30 14:35 UTCGHSA enrichment
  12. 2026-09-28 13:52 UTCEPSS rescore
  13. 2026-09-28 13:52 UTCEPSS rescore
  14. 2026-09-28 10:24 UTCEG score recompute
  15. 2026-09-28 10:24 UTCGHSA enrichment
  16. 2026-09-27 13:49 UTCEPSS rescore
  17. 2026-09-26 15:59 UTCEPSS rescore
  18. 2026-09-25 11:30 UTCNVD update
  19. 2026-09-25 10:27 UTCEG score recompute
  20. 2026-09-25 10:27 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-98062?
CVE-2026-98062 is a medium vulnerability published on September 25, 2026. In the Linux kernel, the following vulnerability has been resolved: bpf: Mark signal tracepoint siginfo arguments as scalar The signalgenerate and signaldeliver tracepoints declare their info argument as a struct kernelsiginfo pointer. btfctx_access() therefore treats it as a trusted pointer for…
When was CVE-2026-98062 disclosed?
CVE-2026-98062 was first published on September 25, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-98062 actively exploited?
CVE-2026-98062 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-98062?
CVE-2026-98062 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-98062?
No fix for CVE-2026-98062 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-2026-98062 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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