CVE-2026-93283 (GCVE-0-2026-93283)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:52 – Updated: 2026-09-24 15:52
VLAI
Title
i3c: master: Fix device_register() error path
Summary
In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix device_register() error path When device_register() fails in i3c_master_register_new_i3c_devs(), put_device() is called to drop the reference taken by device_register(). That drops the last reference, so the device's release callback i3c_device_release() runs and frees the i3c_device. Two problems follow from that: i3c_device_release() does WARN_ON(i3cdev->desc), so it warns because desc->dev->desc still points back at the descriptor. Clear it before calling put_device(). After put_device() frees the i3c_device, desc->dev is left pointing at freed memory, so clear desc->dev as well. That prevents, for example, i3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and dereferencing it.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7100 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1832ed55df45f4145335ad992fb83813cdc58b5d , < 5bf498623f8397d45f85f14cd631c5e5a565c2fb (git)
Affected: d48fe8d98171e0fffdeaa8b37ce0a6444bff819b , < 20a2b6df91fd782ef2ff551febef594d0b46a9a7 (git)
Affected: 174ae0a3b89e7804e4ea3d31bd83d6e43f39568c , < a14dbdf471001dd0601b0c491184990c178a199c (git)
Affected: e49a51a96b531f1b4bcd8d358e645b6c74ef67e6 , < d22ad96f1a0c89e0ba66a2facc7430f0923919e3 (git)
Affected: cab63f64887616e3c4e31cfd8103320be6ebc8d3 , < 7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0 (git)
Affected: cab63f64887616e3c4e31cfd8103320be6ebc8d3 , < 7ef12e1dd06e442eebf370f6e53c41bd056d0f22 (git)
Affected: cab63f64887616e3c4e31cfd8103320be6ebc8d3 , < 6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf (git)
Affected: cab63f64887616e3c4e31cfd8103320be6ebc8d3 , < 74be657d98a8d684c0475f3cbd450ef2a30ffc73 (git)
Affected: 204beeb509d37669de34560e83bb8abffe7ee63a (git)
Affected: b24cf43d9babf1265a2bb0ae8d198267cef43b83 (git)
Affected: 5.10.201 , < 5.10.270 (semver)
Affected: 5.15.139 , < 5.15.221 (semver)
Affected: 6.1.63 , < 6.1.188 (semver)
Affected: 6.6.2 , < 6.6.157 (semver)
Affected: 5.4.261 , < 5.5 (semver)
Affected: 6.5.12 , < 6.6 (semver)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix device_register() error path\n\nWhen device_register() fails in i3c_master_register_new_i3c_devs(),\nput_device() is called to drop the reference taken by\ndevice_register().  That drops the last reference, so the device\u0027s\nrelease callback i3c_device_release() runs and frees the i3c_device.\n\nTwo problems follow from that:\n\ni3c_device_release() does WARN_ON(i3cdev-\u003edesc), so it warns because\ndesc-\u003edev-\u003edesc still points back at the descriptor.  Clear it before\ncalling put_device().\n\nAfter put_device() frees the i3c_device, desc-\u003edev is left pointing at\nfreed memory, so clear desc-\u003edev as well.  That prevents, for example,\ni3c_master_unregister_i3c_devs() seeing desc-\u003edev as non-NULL and\ndereferencing it."
        }
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    "dateReserved": "2026-09-17T16:02:15.098Z",
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix device_register() error path\n\nWhen device_register() fails in i3c_master_register_new_i3c_devs(),\nput_device() is called to drop the reference taken by\ndevice_register().  That drops the last reference, so the device\u0027s\nrelease callback i3c_device_release() runs and frees the i3c_device.\n\nTwo problems follow from that:\n\ni3c_device_release() does WARN_ON(i3cdev-\u003edesc), so it warns because\ndesc-\u003edev-\u003edesc still points back at the descriptor.  Clear it before\ncalling put_device().\n\nAfter put_device() frees the i3c_device, desc-\u003edev is left pointing at\nfreed memory, so clear desc-\u003edev as well.  That prevents, for example,\ni3c_master_unregister_i3c_devs() seeing desc-\u003edev as non-NULL and\ndereferencing it."
          }
        ],
        "id": "CVE-2026-93283",
        "lastModified": "2026-09-24T16:17:25.690",
        "metrics": {},
        "published": "2026-09-24T16:17:25.690",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/20a2b6df91fd782ef2ff551febef594d0b46a9a7"
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/74be657d98a8d684c0475f3cbd450ef2a30ffc73"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7ef12e1dd06e442eebf370f6e53c41bd056d0f22"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a14dbdf471001dd0601b0c491184990c178a199c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d22ad96f1a0c89e0ba66a2facc7430f0923919e3"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-08T14:23:21+00:00",
      "cve": "CVE-2026-93283",
      "id": "CVE-2026-93283",
      "initial_release_date": "2026-09-24T00:00:00+00:00",
      "product_status:known_affected": "77",
      "product_status:known_not_affected": "200",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: i3c: master: Fix device_register() error path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93283.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-09T17:03:23Z",
      "cve": "CVE-2026-93283",
      "id": "CVE-2026-93283",
      "initial_release_date": "2026-09-29T23:52:52Z",
      "product_status:known_affected": "163",
      "product_status:known_not_affected": "184",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93283",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93283.json",
      "version": "3"
    }
  }
}



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