CVE-2026-80646Hinoki check available

Kernel panic via IPv6 device NULL dereference

Published Aug 28, 2026 · Updated Aug 28, 2026

NULL pointer dereference in Linux kernel IPv6 statistics processing allows attackers to trigger a kernel panic during interface removal. The __in6_dev_stats_get() helper passes a NULL result from dev_get_by_index_rcu() to __in6_dev_get(), which dereferences the missing device's ip6_ptr. The race requires a VRF master, IPv6 traffic, and concurrent removal of the original physical interface, so the bounded consequence is a kernel panic.

CVSS severityUnavailable
Unscored
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

NULL pointer dereference in Linux kernel IPv6 statistics processing allows attackers to trigger a kernel panic during interface removal. The __in6_dev_stats_get() helper passes a NULL result from dev_get_by_index_rcu() to __in6_dev_get(), which dereferences the missing device's ip6_ptr. The race requires a VRF master, IPv6 traffic, and concurrent removal of the original physical interface, so the bounded consequence is a kernel panic.

The record

CVE
CVE-2026-80646
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=4.19.291 <4.20
  2. Affected versionversion=5.2
  3. Affected versionversion=a24963500a4ec921ce9c2597e0a584e44513afae
  4. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <0db1949084e85a72d174a7dea3259b94fe5a9305
  5. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <1a4adfbeb47a212a64539137411f1ca168474d33
  6. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <1e3db30a88815bae6e9d5db6f64ac735e615a07e
  7. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <507541c2a8eeb76c02bd2511958f73a8cfa3e1bc
  8. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <952426a83ca75cea25c09d58944abafaa3ebd242
  9. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <a23f2c68c6635e41404f189f8f7ae910738cebdb
  10. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <e14db43677946bf2095febd294bb3c13ab375ab7
  11. Affected versionversion=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <fc920c0659cdea5afd8721c1155a51564859e075

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.19.291 <4.20; version=5.2; version=a24963500a4ec921ce9c2597e0a584e44513afae; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <0db1949084e85a72d174a7dea3259b94fe5a9305; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <1a4adfbeb47a212a64539137411f1ca168474d33; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <1e3db30a88815bae6e9d5db6f64ac735e615a07e; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <507541c2a8eeb76c02bd2511958f73a8cfa3e1bc; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <952426a83ca75cea25c09d58944abafaa3ebd242; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <a23f2c68c6635e41404f189f8f7ae910738cebdb; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <e14db43677946bf2095febd294bb3c13ab375ab7; version=e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f <fc920c0659cdea5afd8721c1155a51564859e075

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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