CVE-2026-98115

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-25. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.8Exploit: 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:

ksmbd: safely drain sessions during logoff

SMB3 multichannel allows requests for one session to run on multiple connections. Wait for all channels bound to a session before freeing shared session objects.

A deferred byte-range lock remains counted as a running request and only wakes when its file closes. Wake blocked locks during the drain without unpublishing or modifying their file objects. Synchronous CANCEL requests must invoke their cancellation callback to wake pending operations, while CHANGE_NOTIFY completion remains specific to the asynchronous path.

Serialize session teardown with channel registration and previous-session cleanup, and use atomic work-state transitions so LOGOFF, CANCEL, and connection teardown invoke cancellation callbacks only once.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
44
EG Risk 44/100CISA 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
Severity88% × 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
0.3%
EPSS %ILE
17th
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 (2)

Auto-updated Sep 25, 2026
No patch confirmed yet.
generic

ksmbd: safely drain sessions during logoff - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d12168084c8c1b6d883c8eca5853929ac5136a9e
generic

ksmbd: safely drain sessions during logoff - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a7e6df0bb92642bee4431b2b85c69ada1e463b21

Vendor Advisories for CVE-2026-98115(2)

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

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions)
  • every version up to 7.2.7-1: fixed in 7.2.7-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 43× in last 7d / 62× 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 07:49 UTCEG score recompute
  2. 2026-10-05 07:49 UTCVendor advisory
  3. 2026-10-05 07:49 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 18:58 UTCVendor advisory
  6. 2026-10-04 18:58 UTCGHSA enrichment
  7. 2026-10-04 06:02 UTCVendor advisory
  8. 2026-10-04 06:02 UTCGHSA enrichment
  9. 2026-10-03 17:12 UTCEG score recompute
  10. 2026-10-03 17:12 UTCVendor advisory
  11. 2026-10-03 17:11 UTCGHSA enrichment
  12. 2026-10-03 14:26 UTCEPSS rescore
  13. 2026-10-03 04:17 UTCEG score recompute
  14. 2026-10-03 04:17 UTCVendor advisory
  15. 2026-10-03 04:17 UTCGHSA enrichment
  16. 2026-10-02 17:57 UTCEPSS rescore
  17. 2026-10-02 15:26 UTCVendor advisory
  18. 2026-10-02 15:26 UTCGHSA enrichment
  19. 2026-10-02 05:05 UTCEG score recompute
  20. 2026-10-02 05:05 UTCVendor advisory
  21. 2026-10-02 05:05 UTCGHSA enrichment
  22. 2026-10-01 19:51 UTCEPSS rescore
  23. 2026-10-01 16:15 UTCVendor advisory
  24. 2026-10-01 16:15 UTCGHSA enrichment
  25. 2026-10-01 03:24 UTCEG score recompute
Show 37 more
  1. 2026-10-01 03:24 UTCVendor advisory
  2. 2026-10-01 03:24 UTCGHSA enrichment
  3. 2026-09-30 15:04 UTCEPSS rescore
  4. 2026-09-30 14:34 UTCVendor advisory
  5. 2026-09-30 14:34 UTCGHSA enrichment
  6. 2026-09-30 12:42 UTCVendor advisory
  7. 2026-09-30 12:42 UTCGHSA enrichment
  8. 2026-09-29 23:49 UTCEG score recompute
  9. 2026-09-29 23:49 UTCVendor advisory
  10. 2026-09-29 23:49 UTCGHSA enrichment
  11. 2026-09-29 09:18 UTCEG score recompute
  12. 2026-09-29 09:18 UTCVendor advisory
  13. 2026-09-29 09:18 UTCGHSA enrichment
  14. 2026-09-28 20:28 UTCEG score recompute
  15. 2026-09-28 20:28 UTCVendor advisory
  16. 2026-09-28 20:28 UTCGHSA enrichment
  17. 2026-09-28 13:52 UTCEPSS rescore
  18. 2026-09-28 13:52 UTCEPSS rescore
  19. 2026-09-28 07:37 UTCVendor advisory
  20. 2026-09-28 07:37 UTCGHSA enrichment
  21. 2026-09-27 18:47 UTCEG score recompute
  22. 2026-09-27 18:47 UTCGHSA enrichment
  23. 2026-09-27 13:49 UTCEPSS rescore
  24. 2026-09-27 05:55 UTCGHSA enrichment
  25. 2026-09-26 17:05 UTCEG score recompute
  26. 2026-09-26 17:05 UTCGHSA enrichment
  27. 2026-09-26 15:59 UTCEPSS rescore
  28. 2026-09-26 04:15 UTCEG score recompute
  29. 2026-09-26 04:15 UTCGHSA enrichment
  30. 2026-09-25 15:23 UTCEG score recompute
  31. 2026-09-25 15:23 UTCGHSA enrichment
  32. 2026-09-25 14:51 UTCEG score recompute▲ 8.80
  33. 2026-09-25 14:51 UTCGHSA enrichment
  34. 2026-09-25 14:49 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  35. 2026-09-25 11:30 UTCNVD update
  36. 2026-09-25 10:48 UTCEG score recompute
  37. 2026-09-25 10:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-98115?
CVE-2026-98115 is a high vulnerability published on September 25, 2026. In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely drain sessions during logoff SMB3 multichannel allows requests for one session to run on multiple connections. Wait for all channels bound to a session before freeing shared session objects. A deferred byte-range lock…
When was CVE-2026-98115 disclosed?
CVE-2026-98115 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-2026-98115 actively exploited?
CVE-2026-98115 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (17th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-98115?
CVE-2026-98115 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-98115?
No fix for CVE-2026-98115 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-2026-98115 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-98115

Explore →

Is Your Infrastructure Affected by CVE-2026-98115?

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

Book a Demo →Browse All CVEs