Vulnerability-Lookup

GHSA-W8W6-F4MM-HW75

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-07-07 21:31

Details

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

net: phonet: free phonet_device after RCU grace period

phonet_device_destroy() removes a phonet_device from the per-net device list with list_del_rcu(), but frees it immediately. RCU readers walking the same list can still hold a pointer to the object after it has been removed, leading to a slab-use-after-free.

Use kfree_rcu(), matching the lifetime rule already used by phonet_address_del() for the same object type.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53157"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:33Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phonet: free phonet_device after RCU grace period\n\nphonet_device_destroy() removes a phonet_device from the per-net device\nlist with list_del_rcu(), but frees it immediately. RCU readers walking\nthe same list can still hold a pointer to the object after it has been\nremoved, leading to a slab-use-after-free.\n\nUse kfree_rcu(), matching the lifetime rule already used by\nphonet_address_del() for the same object type.",
  "id": "GHSA-w8w6-f4mm-hw75",
  "modified": "2026-07-07T21:31:30Z",
  "published": "2026-06-25T09:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53157"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53157 (GCVE-0-2026-53157)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-07-04 11:50

Title

net: phonet: free phonet_device after RCU grace period

Summary

In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonet_device after RCU grace period phonet_device_destroy() removes a phonet_device from the per-net device list with list_del_rcu(), but frees it immediately. RCU readers walking the same list can still hold a pointer to the object after it has been removed, leading to a slab-use-after-free. Use kfree_rcu(), matching the lifetime rule already used by phonet_address_del() for the same object type.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/d59794337ea496042…
https://git.kernel.org/stable/c/6cd7067d6e4b0b203…
https://git.kernel.org/stable/c/2ec8011cce0cd0fc7…
https://git.kernel.org/stable/c/09c9b92c201048116…
https://git.kernel.org/stable/c/bd2ab4d800fc26814…
https://git.kernel.org/stable/c/52b8f5ef82c886f7c…
https://git.kernel.org/stable/c/bff309ea51f1395c1…
https://git.kernel.org/stable/c/71de0177b28da751f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < d59794337ea496042288c7c68356d9b9ca7f46a9 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < 6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < 2ec8011cce0cd0fc7a5068585d867fc08d508578 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < 09c9b92c2010481160245244ea8fa1d06d5d4ae0 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < bd2ab4d800fc26814d89328d87b5f97ef6aa906a (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < 52b8f5ef82c886f7cd24617915e4b1579ddfd001 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < bff309ea51f1395c1ef8be8b75ce62d28a319113 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < 71de0177b28da751f407581a4515cf4d762f6296 (git)
Linux	Linux	Affected: 2.6.33 Unaffected: 0 , < 2.6.33 (semver) Unaffected: 5.10.260 , ≤ 5.10.* (semver) Unaffected: 5.15.211 , ≤ 5.15.* (semver) Unaffected: 6.1.177 , ≤ 6.1.* (semver) Unaffected: 6.6.144 , ≤ 6.6.* (semver) Unaffected: 6.12.95 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/phonet/pn_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "git"
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            },
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              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.10.260",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.15.211",
              "versionType": "semver"
            },
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
          ]
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      ],
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      "providerMetadata": {
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    "cveId": "CVE-2026-53157",
    "datePublished": "2026-06-25T08:38:40.132Z",
    "dateReserved": "2026-06-09T07:44:35.388Z",
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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.

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-W8W6-F4MM-HW75

CVE-2026-53157 (GCVE-0-2026-53157)

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