Vulnerability-Lookup

GHSA-PX76-4WR3-JJW7

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-29 09:30

Details

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

ipv6: guard against possible NULL deref in __in6_dev_stats_get()

dev_get_by_index_rcu() could return NULL if the original physical device is unregistered.

Found by Sashiko.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80646"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:49Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: guard against possible NULL deref in __in6_dev_stats_get()\n\ndev_get_by_index_rcu() could return NULL if the original physical\ndevice is unregistered.\n\nFound by Sashiko.",
  "id": "GHSA-px76-4wr3-jjw7",
  "modified": "2026-08-29T09:30:26Z",
  "published": "2026-08-28T09:31:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80646"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/952426a83ca75cea25c09d58944abafaa3ebd242"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc920c0659cdea5afd8721c1155a51564859e075"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-80646 (GCVE-0-2026-80646)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-29 06:21

Title

ipv6: guard against possible NULL deref in __in6_dev_stats_get()

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv6: guard against possible NULL deref in __in6_dev_stats_get() dev_get_by_index_rcu() could return NULL if the original physical device is unregistered. Found by Sashiko.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/a23f2c68c6635e414…
https://git.kernel.org/stable/c/e14db43677946bf20…
https://git.kernel.org/stable/c/1a4adfbeb47a212a6…
https://git.kernel.org/stable/c/1e3db30a88815bae6…
https://git.kernel.org/stable/c/952426a83ca75cea2…
https://git.kernel.org/stable/c/0db1949084e85a72d…
https://git.kernel.org/stable/c/fc920c0659cdea5af…
https://git.kernel.org/stable/c/507541c2a8eeb76c0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < a23f2c68c6635e41404f189f8f7ae910738cebdb (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < e14db43677946bf2095febd294bb3c13ab375ab7 (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < 1a4adfbeb47a212a64539137411f1ca168474d33 (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < 1e3db30a88815bae6e9d5db6f64ac735e615a07e (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < 952426a83ca75cea25c09d58944abafaa3ebd242 (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < 0db1949084e85a72d174a7dea3259b94fe5a9305 (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < fc920c0659cdea5afd8721c1155a51564859e075 (git) Affected: e1ae5c2ea4783b1fd87be250f9fcc9d9e1a6ba3f , < 507541c2a8eeb76c02bd2511958f73a8cfa3e1bc (git) Affected: a24963500a4ec921ce9c2597e0a584e44513afae (git) Affected: 4.19.291 , < 4.20 (semver)
Linux	Linux	Affected: 5.2 Unaffected: 0 , < 5.2 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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            "include/net/addrconf.h"
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    "cveId": "CVE-2026-80646",
    "datePublished": "2026-08-28T06:48:56.277Z",
    "dateReserved": "2026-08-26T14:34:25.779Z",
    "dateUpdated": "2026-08-29T06:21:41.550Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-PX76-4WR3-JJW7

CVE-2026-80646 (GCVE-0-2026-80646)

Tags

Sightings

Nomenclature