CVE-2026-23156

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-14. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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

A fix is available — apply it.

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

efivarfs: fix error propagation in efivar_entry_get()

efivar_entry_get() always returns success even if the underlying __efivar_entry_get() fails, masking errors.

This may result in uninitialized heap memory being copied to userspace in the efivarfs_file_read() path.

Fix it by returning the error from __efivar_entry_get().

CVSS v3
7.8
EG Score
7.8(medium)
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
2.2%
KEV
Not listed

Published

February 14, 2026

Last Modified

March 18, 2026

Advisory Details (5)

Auto-updated Jun 9, 2026
No patch confirmed yet.
generic

efivarfs: fix error propagation in efivar_entry_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16
generic

efivarfs: fix error propagation in efivar_entry_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8
generic

efivarfs: fix error propagation in efivar_entry_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8
generic

efivarfs: fix error propagation in efivar_entry_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995
generic

efivarfs: fix error propagation in efivar_entry_get() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42

Vendor Advisories for CVE-2026-23156(2)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1059.65+fips1) @ noble2026-06-12ubuntu
ubuntulinux-virtual-6.8 (6.8.0-117.117) @ noble2026-06-12ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1054.57.1) @ noble2026-06-12ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-116.116+fips1) @ noble2026-06-12ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1054.57~22.04.1) @ jammy2026-06-12ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1024.24) @ noble2026-06-12ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1056.62) @ noble2026-06-12ubuntu
redhatkernel-0:6.12.0-55.69.1.el10_02026-04-20redhat
redhatkernel-0:6.12.0-124.43.1.el10_12026-03-09redhat
linuxKernel @ 6.1.162—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(7)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× 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.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-23 03:06 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-21 15:24 UTCEPSS rescore
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
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  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-19 02:28 UTCEPSS rescore
  10. 2026-07-18 10:04 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-17 14:29 UTCOSV refresh
  13. 2026-07-16 17:03 UTCEPSS rescore
  14. 2026-07-16 17:03 UTCEPSS rescore
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 16:57 UTCEPSS rescore
  17. 2026-07-15 02:00 UTCEPSS rescore
  18. 2026-07-15 02:00 UTCEPSS rescore
  19. 2026-07-13 22:30 UTCEPSS rescore
  20. 2026-07-11 08:27 UTCEPSS rescore
  21. 2026-07-09 19:10 UTCEPSS rescore
  22. 2026-07-08 15:15 UTCEPSS rescore
  23. 2026-07-08 15:15 UTCEPSS rescore
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-06 16:27 UTCEPSS rescore
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  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-05 02:30 UTCEPSS rescore
  3. 2026-07-01 15:06 UTCEPSS rescore
  4. 2026-07-01 15:06 UTCEPSS rescore
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-29 14:06 UTCEPSS rescore
  8. 2026-06-29 13:02 UTCOSV refresh
  9. 2026-06-28 14:07 UTCEPSS rescore
  10. 2026-06-28 14:07 UTCEPSS rescore
  11. 2026-06-28 04:56 UTCEPSS rescore
  12. 2026-06-28 04:56 UTCEPSS rescore
  13. 2026-06-27 03:08 UTCEPSS rescore
  14. 2026-06-25 13:49 UTCEPSS rescore
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  16. 2026-06-24 14:05 UTCEPSS rescore
  17. 2026-06-24 14:05 UTCEPSS rescore
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 21:32 UTCEPSS rescore
  20. 2026-06-22 14:25 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 01:59 UTCEPSS rescore
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-19 19:25 UTCEPSS rescore
  27. 2026-06-19 19:25 UTCEPSS rescore
  28. 2026-06-17 17:53 UTCEPSS rescore
  29. 2026-06-17 17:53 UTCEPSS rescore
  30. 2026-06-15 17:48 UTCEPSS rescore
  31. 2026-06-14 23:18 UTCEPSS rescore
  32. 2026-06-13 23:00 UTCEPSS rescore
  33. 2026-06-13 23:00 UTCEPSS rescore
  34. 2026-06-12 23:12 UTCEPSS rescore
  35. 2026-06-12 03:38 UTCVendor advisory
  36. 2026-06-12 03:38 UTCGHSA enrichment
  37. 2026-06-11 14:00 UTCEPSS rescore
  38. 2026-06-10 22:18 UTCEPSS rescore
  39. 2026-06-10 21:23 UTCVendor advisory
  40. 2026-06-10 21:23 UTCGHSA enrichment
  41. 2026-06-10 13:22 UTCEPSS rescore
  42. 2026-06-10 09:37 UTCVendor advisory
  43. 2026-06-10 09:37 UTCGHSA enrichment
  44. 2026-06-09 19:47 UTCVendor advisory
  45. 2026-06-09 19:47 UTCGHSA enrichment
  46. 2026-06-08 14:17 UTCEPSS rescore
  47. 2026-06-08 14:17 UTCEPSS rescore
  48. 2026-06-08 05:17 UTCVendor advisory
  49. 2026-06-08 05:17 UTCGHSA enrichment
  50. 2026-06-07 18:00 UTCVendor advisory
  51. 2026-06-07 18:00 UTCGHSA enrichment
  52. 2026-06-07 15:25 UTCEPSS rescore
  53. 2026-06-07 15:24 UTCEPSS rescore
  54. 2026-06-06 13:47 UTCEPSS rescore
  55. 2026-06-06 13:47 UTCEPSS rescore
  56. 2026-06-06 13:47 UTCEPSS rescore
  57. 2026-06-05 22:47 UTCEPSS rescore
  58. 2026-06-05 06:10 UTCEPSS rescore
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  60. 2026-06-04 13:12 UTCEPSS rescore
  61. 2026-06-04 13:12 UTCEPSS rescore
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  63. 2026-06-02 20:13 UTCEPSS rescore
  64. 2026-06-02 20:13 UTCEPSS rescore
  65. 2026-06-01 13:51 UTCEPSS rescore
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  68. 2026-05-31 22:30 UTCEPSS rescore
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  70. 2026-05-31 00:16 UTCEPSS rescore
  71. 2026-05-31 00:16 UTCEPSS rescore
  72. 2026-05-31 00:16 UTCEPSS rescore
  73. 2026-05-29 13:53 UTCEG score recompute
  74. 2026-05-29 13:53 UTCVendor advisory
  75. 2026-05-29 13:52 UTCGHSA enrichment

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2026-23156?
CVE-2026-23156 is a high vulnerability published on February 14, 2026. In the Linux kernel, the following vulnerability has been resolved: efivarfs: fix error propagation in efivarentryget() efivarentryget() always returns success even if the underlying efivarentryget() fails, masking errors. This may result in uninitialized heap memory being copied to userspace in…
When was CVE-2026-23156 disclosed?
CVE-2026-23156 was first published in the National Vulnerability Database on February 14, 2026, with the most recent update on March 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23156 actively exploited?
CVE-2026-23156 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23156?
CVE-2026-23156 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-23156?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23156, 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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