CVE-2026-68178

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. 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 a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 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:

misc: nsm: pin the module while the device is open

misc_open() installs a misc driver's file operations with fops_get(), which pins file_operations::owner before replacing the file's f_op. The NSM misc device leaves nsm_dev_fops.owner unset, so opening /dev/nsm does not take a module reference on the nsm driver.

If the driver is built as a module, an open file descriptor can therefore survive rmmod of the module that provides its ioctl callbacks. A later ioctl through that descriptor can call into unloaded module text.

Set nsm_dev_fops.owner to THIS_MODULE so the misc core holds the module while any /dev/nsm file descriptor is open, matching the lifetime expectation for the installed file operations.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 17, 2026

Advisory Details (4)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

misc: nsm: pin the module while the device is open - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e9a82d00c3d10129fc310a7547b24a679d5d920
generic

misc: nsm: pin the module while the device is open - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3b231f1e9990f4c21220d0a69733ce2105891ff9
generic

misc: nsm: pin the module while the device is open - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1da310b94504d42001e9c32c43c5dc105b777e5f
generic

misc: nsm: pin the module while the device is open - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1996639f824ce9468395cdb7bcb8f467fa787e77

Vendor Advisories for CVE-2026-68178(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 33× in last 7d / 45× 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. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 21:23 UTCGHSA enrichment
  3. 2026-08-20 10:35 UTCGHSA enrichment
  4. 2026-08-19 23:46 UTCEG score recompute
  5. 2026-08-19 23:46 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 12:57 UTCGHSA enrichment
  8. 2026-08-19 02:07 UTCGHSA enrichment
  9. 2026-08-18 15:18 UTCEG score recompute
  10. 2026-08-18 15:18 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 03:28 UTCGHSA enrichment
  14. 2026-08-17 16:30 UTCEG score recompute
  15. 2026-08-17 16:30 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 05:40 UTCEG score recompute
  18. 2026-08-17 05:40 UTCGHSA enrichment
  19. 2026-08-17 05:10 UTCEG score recompute
  20. 2026-08-17 05:10 UTCGHSA enrichment
  21. 2026-08-17 03:11 UTCGHSA enrichment
  22. 2026-08-16 16:22 UTCEG score recompute
  23. 2026-08-16 16:22 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 05:33 UTCEG score recompute
Show 20 more
  1. 2026-08-16 05:33 UTCGHSA enrichment
  2. 2026-08-15 18:45 UTCGHSA enrichment
  3. 2026-08-15 07:56 UTCEG score recompute
  4. 2026-08-15 07:56 UTCGHSA enrichment
  5. 2026-08-15 01:30 UTCEPSS rescore
  6. 2026-08-14 21:07 UTCGHSA enrichment
  7. 2026-08-14 10:18 UTCEG score recompute
  8. 2026-08-14 10:18 UTCGHSA enrichment
  9. 2026-08-13 23:30 UTCEG score recompute
  10. 2026-08-13 23:30 UTCGHSA enrichment
  11. 2026-08-13 22:45 UTCEG score recompute▲ 7.80
  12. 2026-08-13 22:45 UTCGHSA enrichment
  13. 2026-08-13 22:44 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  14. 2026-08-13 22:00 UTCEPSS rescore
  15. 2026-08-13 11:35 UTCEG score recompute
  16. 2026-08-13 11:35 UTCGHSA enrichment
  17. 2026-08-12 13:51 UTCEPSS rescore
  18. 2026-08-10 13:24 UTCNVD update
  19. 2026-08-10 12:20 UTCEG score recompute
  20. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68178?
CVE-2026-68178 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: misc: nsm: pin the module while the device is open miscopen() installs a misc driver's file operations with fopsget(), which pins fileoperations::owner before replacing the file's fop. The NSM misc device leaves nsmdevfops.owner…
When was CVE-2026-68178 disclosed?
CVE-2026-68178 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68178 actively exploited?
CVE-2026-68178 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.0% of all scored CVEs.
What is the CVSS score of CVE-2026-68178?
CVE-2026-68178 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-68178?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68178, 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

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