usb: typec: tcpm: fix double-free issue in tcpm_port_unregister_pd()

{
  "id": "64c547db384e7f28d85e480d5b1a4e6f18d85cb687f626c9b15ef25b7e49bfb8",
  "url": "https://osv.dev/vulnerability/CVE-2024-26932",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "usb: typec: tcpm: fix double-free issue in tcpm_port_unregister_pd()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: fix double-free issue in tcpm_port_unregister_pd() When unregister pd capabilitie in tcpm, KASAN will capture below double -free issue. The root cause is the same capabilitiy will be kfreed twice, the first time is kfreed by pd_capabilities_release() and the second time is explicitly kfreed by tcpm_port_unregister_pd(). [ 3.988059] BUG: KASAN: double-free in tcpm_port_unregister_pd+0x1a4/0x3dc [ 3.995001] Free of addr ffff0008164d3000 by task kworker/u16:0/10 [ 4.001206] [ 4.002712] CPU: 2 PID: 10 Comm: kworker/u16:0 Not tainted 6.8.0-rc5-next-20240220-05616-g52728c567a55 #53 [ 4.012402] Hardware name: Freescale i.MX8QXP MEK (DT) [ 4.017569] Workqueue: events_unbound deferred_probe_work_func [ 4.023456] Call trace: [ 4.025920] dump_backtrace+0x94/0xec [ 4.029629] show_stack+0x18/0x24 [ 4.032974] dump_stack_lvl+0x78/0x90 [ 4.036675] print_report+0xfc/0x5c0 [ 4.040289] kasan_report_invalid_free+0xa0/0xc0 [ 4.044937] __kasan_slab_free+0x124/0x154 [ 4.049072] kfree+0xb4/0x1e8 [ 4.052069] tcpm_port_unregister_pd+0x1a4/0x3dc [ 4.056725] tcpm_register_port+0x1dd0/0x2558 [ 4.061121] tcpci_register_port+0x420/0x71c [ 4.065430] tcpci_probe+0x118/0x2e0 To fix the issue, this will remove kree() from tcpm_port_unregister_pd().",
    "evidence": "osv:CVE-2024-26932",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.8.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-26932",
      "aliases": [
        "CVE-2024-26932"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "cd099cde4ed264403b434d8344994f97ac2a4349"
                },
                {
                  "fixed": "242e425ed580b2f4dbcb86c8fc03a410a4084a69"
                },
                {
                  "fixed": "b63f90487bdf93a4223ce7853d14717e9d452856"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26932.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.8.0"
                },
                {
                  "fixed": "6.8.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26932.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.948659370Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/242e425ed580b2f4dbcb86c8fc03a410a4084a69",
        "https://git.kernel.org/stable/c/b63f90487bdf93a4223ce7853d14717e9d452856",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26932.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26932",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26932.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26932",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496479,
  "published_at": "2024-05-01T05:17:19.129+00:00"
}