Vulnerability-Lookup

GHSA-W8W6-F4MM-HW75

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

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53157"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:33Z",
    "severity": null
  },
  "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": "2026-06-25T09:31:19Z",
  "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/52b8f5ef82c886f7cd24617915e4b1579ddfd001"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-25 08:38

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

References

3 references

URL	Tags
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 , < 52b8f5ef82c886f7cd24617915e4b1579ddfd001 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < bff309ea51f1395c1ef8be8b75ce62d28a319113 (git) Affected: eeb74a9d45f781ec6f47b9e0a75a6a427b53f165 , < 71de0177b28da751f407581a4515cf4d762f6296 (git)
Linux	Linux	Affected: 2.6.33 Unaffected: 0 , < 2.6.33 (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": {
    "cna": {
      "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",
          "versions": [
            {
              "lessThan": "52b8f5ef82c886f7cd24617915e4b1579ddfd001",
              "status": "affected",
              "version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165",
              "versionType": "git"
            },
            {
              "lessThan": "bff309ea51f1395c1ef8be8b75ce62d28a319113",
              "status": "affected",
              "version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165",
              "versionType": "git"
            },
            {
              "lessThan": "71de0177b28da751f407581a4515cf4d762f6296",
              "status": "affected",
              "version": "eeb74a9d45f781ec6f47b9e0a75a6a427b53f165",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/phonet/pn_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.33"
            },
            {
              "lessThan": "2.6.33",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "versionStartIncluding": "2.6.33",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.33",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "2.6.33",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:38:40.132Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001"
        },
        {
          "url": "https://git.kernel.org/stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113"
        },
        {
          "url": "https://git.kernel.org/stable/c/71de0177b28da751f407581a4515cf4d762f6296"
        }
      ],
      "title": "net: phonet: free phonet_device after RCU grace period",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53157",
    "datePublished": "2026-06-25T08:38:40.132Z",
    "dateReserved": "2026-06-09T07:44:35.388Z",
    "dateUpdated": "2026-06-25T08:38:40.132Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-W8W6-F4MM-HW75

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

Tags

Sightings

Nomenclature