CVE-2026-68331 (GCVE-0-2026-68331)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:33
VLAI
Title
dpaa2-eth: put MAC endpoint device on disconnect
Summary
In the Linux kernel, the following vulnerability has been resolved: dpaa2-eth: put MAC endpoint device on disconnect fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The Ethernet connect path stores that device in mac->mc_dev and keeps it for the lifetime of the connected MAC object. However, the disconnect path only disconnects and closes the MAC before freeing the dpaa2_mac object. It does not drop the endpoint device reference stored in mac->mc_dev, so every successful connect leaks that device reference when the MAC is later disconnected. Drop the endpoint device reference after closing the MAC and before freeing the dpaa2_mac object.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < 6b6ffdb9ca4547a3c4c274aa3e25b6c68dbc62e1 (git)
Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < 1974127776da46a000c61f36d4946799ea6d4f51 (git)
Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < 915012e923316b8b5d5bf8fc771617b47bd7572d (git)
Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < e23e4a3b9dfd893469c731318d409cdf04fb1ddf (git)
Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < f112df0744e2d77baa68eeebb860021bbaaa022a (git)
Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < a3cecf169cc652b558d08661bb6ce55e4c933ec0 (git)
Affected: 71947923089353f23f4f210864903c4dcf2c1696 , < b4b201cc93ff70150853aba03e14d314d1980ca0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-eth: put MAC endpoint device on disconnect\n\nfsl_mc_get_endpoint() returns the MAC endpoint device with a reference\ntaken through device_find_child(). The Ethernet connect path stores that\ndevice in mac-\u003emc_dev and keeps it for the lifetime of the connected MAC\nobject.\n\nHowever, the disconnect path only disconnects and closes the MAC before\nfreeing the dpaa2_mac object. It does not drop the endpoint device\nreference stored in mac-\u003emc_dev, so every successful connect leaks that\ndevice reference when the MAC is later disconnected.\n\nDrop the endpoint device reference after closing the MAC and before\nfreeing the dpaa2_mac object."
        }
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      "providerMetadata": {
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    "dateReserved": "2026-07-30T09:28:09.383Z",
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-eth: put MAC endpoint device on disconnect\n\nfsl_mc_get_endpoint() returns the MAC endpoint device with a reference\ntaken through device_find_child(). The Ethernet connect path stores that\ndevice in mac-\u003emc_dev and keeps it for the lifetime of the connected MAC\nobject.\n\nHowever, the disconnect path only disconnects and closes the MAC before\nfreeing the dpaa2_mac object. It does not drop the endpoint device\nreference stored in mac-\u003emc_dev, so every successful connect leaks that\ndevice reference when the MAC is later disconnected.\n\nDrop the endpoint device reference after closing the MAC and before\nfreeing the dpaa2_mac object."
          }
        ],
        "id": "CVE-2026-68331",
        "lastModified": "2026-08-19T17:20:43.260",
        "metrics": {},
        "published": "2026-08-10T13:20:23.410",
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      "current_release_date": "2026-08-31T11:45:10+00:00",
      "cve": "CVE-2026-68331",
      "id": "CVE-2026-68331",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "76",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: dpaa2-eth: put MAC endpoint device on disconnect",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68331.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-09-18T00:31:54Z",
      "cve": "CVE-2026-68331",
      "id": "CVE-2026-68331",
      "initial_release_date": "2026-08-11T23:47:36Z",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68331",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68331.json",
      "version": "9"
    }
  }
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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