CVE-2026-68402

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

A fix is available — apply it.

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

wifi: cfg80211: bound element ID read when checking non-inheritance

cfg80211_is_element_inherited() reads the first data octet of the candidate element (id = elem->data[0]) to look it up in an extension non-inheritance list. It does so after testing elem->id, but without verifying that the element actually has a data octet. A zero-length extension element (WLAN_EID_EXTENSION with length 0) therefore makes it read one octet past the end of the element.

_ieee802_11_parse_elems_full() runs this check for every element of a frame once a non-inheritance context exists -- e.g. while parsing a per-STA profile of a Multi-Link element in a (re)association response, or a non-transmitted BSS profile -- so a crafted frame from an AP can trigger a one-octet slab-out-of-bounds read during element parsing:

BUG: KASAN: slab-out-of-bounds in cfg80211_is_element_inherited Read of size 1 ... in net/wireless/scan.c

Return early (treat the element as inherited) when an extension element carries no data, mirroring the existing handling of empty ID lists.

The bug was found by fuzzing ieee802_11_parse_elems_full() under KASAN.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (5)

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

wifi: cfg80211: bound element ID read when checking non-inheritance - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ddf2773bcc8e49a43c561f22ec1e7924215d7947
generic

wifi: cfg80211: bound element ID read when checking non-inheritance - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cb8afea4655ff004fa7feee825d5c79783525383
generic

wifi: cfg80211: bound element ID read when checking non-inheritance - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/84bd907361c56fbd5523eceb2682cb39da059bd5
generic

wifi: cfg80211: bound element ID read when checking non-inheritance - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/20c308d9a57722801961f816395bf825f7bde6bc
generic

wifi: cfg80211: bound element ID read when checking non-inheritance - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/11ac7a5e75f5132f1778e0c60981d30dc29fb869

Vendor Advisories for CVE-2026-68402(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-687.47.1.el9_82026-09-14redhat

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.

Affected Packages

(4 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)6.1.187-1—
linux-6.126.12.100-1~deb12u16.12.101-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)6.12.101-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (160 versions)7.1.6-1—

Data Freshness Timeline

(refreshed 33× in last 7d / 144× 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 188 total refreshes for this CVE.

  1. 2026-09-19 06:22 UTCEG score recompute
  2. 2026-09-19 06:22 UTCVendor advisory
  3. 2026-09-19 06:22 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 17:18 UTCVendor advisory
  6. 2026-09-18 17:18 UTCGHSA enrichment
  7. 2026-09-18 03:29 UTCEG score recompute
  8. 2026-09-18 03:29 UTCVendor advisory
  9. 2026-09-18 03:29 UTCGHSA enrichment
  10. 2026-09-17 14:55 UTCVendor advisory
  11. 2026-09-17 14:55 UTCGHSA enrichment
  12. 2026-09-17 00:45 UTCEG score recompute
  13. 2026-09-17 00:45 UTCVendor advisory
  14. 2026-09-17 00:45 UTCGHSA enrichment
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-16 02:32 UTCVendor advisory
  18. 2026-09-16 02:32 UTCGHSA enrichment
  19. 2026-09-15 13:48 UTCEG score recompute
  20. 2026-09-15 13:48 UTCVendor advisory
  21. 2026-09-15 13:48 UTCGHSA enrichment
  22. 2026-09-15 00:29 UTCVendor advisory
  23. 2026-09-15 00:29 UTCGHSA enrichment
  24. 2026-09-14 11:46 UTCVendor advisory
  25. 2026-09-14 11:46 UTCGHSA enrichment
Show 75 more
  1. 2026-09-13 23:11 UTCEG score recompute
  2. 2026-09-13 23:11 UTCVendor advisory
  3. 2026-09-13 23:11 UTCGHSA enrichment
  4. 2026-09-13 10:37 UTCVendor advisory
  5. 2026-09-13 10:37 UTCGHSA enrichment
  6. 2026-09-12 22:03 UTCEG score recompute
  7. 2026-09-12 22:03 UTCVendor advisory
  8. 2026-09-12 22:03 UTCGHSA enrichment
  9. 2026-09-12 09:28 UTCVendor advisory
  10. 2026-09-12 09:28 UTCGHSA enrichment
  11. 2026-09-11 20:52 UTCEG score recompute
  12. 2026-09-11 20:52 UTCVendor advisory
  13. 2026-09-11 20:52 UTCGHSA enrichment
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 09:37 UTCEPSS rescore
  16. 2026-09-11 08:09 UTCGHSA enrichment
  17. 2026-09-10 19:35 UTCEG score recompute
  18. 2026-09-10 19:35 UTCGHSA enrichment
  19. 2026-09-10 07:01 UTCGHSA enrichment
  20. 2026-09-09 18:27 UTCEG score recompute
  21. 2026-09-09 18:27 UTCVendor advisory
  22. 2026-09-09 18:27 UTCGHSA enrichment
  23. 2026-09-09 05:52 UTCEG score recompute
  24. 2026-09-09 05:52 UTCVendor advisory
  25. 2026-09-09 05:52 UTCGHSA enrichment
  26. 2026-09-08 22:01 UTCEPSS rescore
  27. 2026-09-08 07:23 UTCVendor advisory
  28. 2026-09-08 07:23 UTCGHSA enrichment
  29. 2026-09-07 17:19 UTCEG score recompute
  30. 2026-09-07 17:19 UTCVendor advisory
  31. 2026-09-07 17:19 UTCGHSA enrichment
  32. 2026-09-07 16:01 UTCEPSS rescore
  33. 2026-09-06 16:48 UTCEG score recompute
  34. 2026-09-06 16:48 UTCVendor advisory
  35. 2026-09-06 16:48 UTCGHSA enrichment
  36. 2026-09-06 13:47 UTCEPSS rescore
  37. 2026-09-06 04:13 UTCVendor advisory
  38. 2026-09-06 04:13 UTCGHSA enrichment
  39. 2026-09-05 15:39 UTCEG score recompute
  40. 2026-09-05 15:39 UTCVendor advisory
  41. 2026-09-05 15:39 UTCGHSA enrichment
  42. 2026-09-05 15:31 UTCEPSS rescore
  43. 2026-09-05 02:00 UTCEG score recompute
  44. 2026-09-05 02:00 UTCVendor advisory
  45. 2026-09-05 02:00 UTCGHSA enrichment
  46. 2026-09-04 08:23 UTCEG score recompute
  47. 2026-09-04 08:23 UTCVendor advisory
  48. 2026-09-04 08:23 UTCGHSA enrichment
  49. 2026-09-04 05:07 UTCEPSS rescore
  50. 2026-09-03 16:43 UTCVendor advisory
  51. 2026-09-03 16:43 UTCGHSA enrichment
  52. 2026-09-03 02:49 UTCEG score recompute
  53. 2026-09-03 02:49 UTCVendor advisory
  54. 2026-09-03 02:49 UTCGHSA enrichment
  55. 2026-09-02 14:12 UTCEPSS rescore
  56. 2026-09-02 06:25 UTCVendor advisory
  57. 2026-09-02 06:25 UTCGHSA enrichment
  58. 2026-09-01 15:20 UTCEG score recompute
  59. 2026-09-01 15:20 UTCVendor advisory
  60. 2026-09-01 15:20 UTCGHSA enrichment
  61. 2026-09-01 13:54 UTCEPSS rescore
  62. 2026-09-01 04:40 UTCEPSS rescore
  63. 2026-08-31 22:12 UTCVendor advisory
  64. 2026-08-31 22:12 UTCGHSA enrichment
  65. 2026-08-30 23:42 UTCEG score recompute
  66. 2026-08-30 23:42 UTCVendor advisory
  67. 2026-08-30 23:42 UTCGHSA enrichment
  68. 2026-08-30 19:17 UTCEPSS rescore
  69. 2026-08-30 11:08 UTCEG score recompute
  70. 2026-08-30 11:08 UTCVendor advisory
  71. 2026-08-30 11:08 UTCGHSA enrichment
  72. 2026-08-30 01:22 UTCEPSS rescore
  73. 2026-08-29 22:34 UTCVendor advisory
  74. 2026-08-29 22:34 UTCGHSA enrichment
  75. 2026-08-29 10:00 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-68402?
CVE-2026-68402 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: bound element ID read when checking non-inheritance cfg80211iselement_inherited() reads the first data octet of the candidate element (id = elem->data[0]) to look it up in an extension non-inheritance list. It does…
When was CVE-2026-68402 disclosed?
CVE-2026-68402 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68402 actively exploited?
CVE-2026-68402 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 80.7% of all scored CVEs.
What is the CVSS score of CVE-2026-68402?
CVE-2026-68402 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-68402?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68402, 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.

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