CVE-2026-74475

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-15. A secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 10.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

vxlan: use neigh_ha_snapshot() in route_shortcircuit()

The neighbour hardware address n->ha can be updated asynchronously by the neighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without holding the seqlock loop can lead to torn reads or reading a partially updated MAC address.

Use neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under read_seqbegin()/read_seqretry() lock protection before using it.

Note that arp_reduce() and neigh_reduce() seem to have the same issue left for future patches.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
50
EG Risk 50/100CISA 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
Severity100% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 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

August 15, 2026

Last Modified

August 19, 2026

Advisory Details (8)

Auto-updated Sep 30, 2026
Patch available.
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ff89415d34c3ab9f5312316423122e664ed3524f
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ec341bb76d77b4c2948764375ee6bfeef4bb41c3
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d0993fc053f29e15cc7c9fe2029df3882a2ab5ab
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/87210054bad82bbae6f483a742dc45722fb47a6b
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/32a9590a8d30426e3db63e6b20893e47e02576c0
generic

vxlan: use neigh_ha_snapshot() in route_shortcircuit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/05f2987f73daa05333fd713d05546142f9f7c5f0

Vendor Advisories for CVE-2026-74475(2)

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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1035.38) @ noble2026-10-05ubuntu

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 rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)
  • every version up to 6.1.187-1: fixed in 6.1.187-1
—
linux-6.126.12.100-1~deb12u1, 6.12.101-1~deb12u1
  • every version up to 6.12.107-1~deb12u1: fixed in 6.12.107-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (33 versions)
  • every version up to 6.12.105-1: fixed in 6.12.105-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (165 versions)
  • every version up to 7.1.8-1: fixed in 7.1.8-1
—

Additional Vendor Advisories

(1)

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 58× in last 7d / 287× 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 447 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-74475?
CVE-2026-74475 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: vxlan: use neighhasnapshot() in route_shortcircuit() The neighbour hardware address n->ha can be updated asynchronously by the neighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without holding the seqlock loop can…
When was CVE-2026-74475 disclosed?
CVE-2026-74475 was first published on August 15, 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-2026-74475 actively exploited?
CVE-2026-74475 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74475?
CVE-2026-74475 has a CVSS base score of 10.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-74475?
A fix for CVE-2026-74475 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-74475 are linked in the Vendor Advisories panel on this page.

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