binder: fix yet another UAF in binder_devices

{
  "id": "e3aafb5c9ea1db9d9f02dbf763f887600e4ee75705682905dd308358711eb8ea",
  "url": "https://osv.dev/vulnerability/CVE-2025-38175",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "binder: fix yet another UAF in binder_devices",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: binder: fix yet another UAF in binder_devices Commit e77aff5528a18 (\"binderfs: fix use-after-free in binder_devices\") addressed a use-after-free where devices could be released without first being removed from the binder_devices list. However, there is a similar path in binder_free_proc() that was missed: ================================================================== BUG: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100 Write of size 8 at addr ffff0000c773b900 by task umount/467 CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: binder_remove_device+0xd4/0x100 binderfs_evict_inode+0x230/0x2f0 evict+0x25c/0x5dc iput+0x304/0x480 dentry_unlink_inode+0x208/0x46c __dentry_kill+0x154/0x530 [...] Allocated by task 463: __kmalloc_cache_noprof+0x13c/0x324 binderfs_binder_device_create.isra.0+0x138/0xa60 binder_ctl_ioctl+0x1ac/0x230 [...] Freed by task 215: kfree+0x184/0x31c binder_proc_dec_tmpref+0x33c/0x4ac binder_deferred_func+0xc10/0x1108 process_one_work+0x520/0xba4 [...] ================================================================== Call binder_remove_device() within binder_free_proc() to ensure the device is removed from the binder_devices list before being kfreed.",
    "evidence": "osv:CVE-2025-38175",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.14.11",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-38175",
      "aliases": [
        "CVE-2025-38175"
      ],
      "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": "12d909cac1e1c4147cc3417fee804ee12fc6b984"
                },
                {
                  "fixed": "4a7694f499cae5b83412c5281bf2c961f34f2ed6"
                },
                {
                  "fixed": "72a726fb5f25fbb31d6060acfb671c1955831245"
                },
                {
                  "fixed": "9857af0fcff385c75433f2162c30c62eb912ef6d"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38175.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.14.0"
                },
                {
                  "fixed": "6.14.11"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
                },
                {
                  "fixed": "6.15.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38175.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.095249237Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4a7694f499cae5b83412c5281bf2c961f34f2ed6",
        "https://git.kernel.org/stable/c/72a726fb5f25fbb31d6060acfb671c1955831245",
        "https://git.kernel.org/stable/c/9857af0fcff385c75433f2162c30c62eb912ef6d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38175.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38175",
        "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/2025/38xxx/CVE-2025-38175.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38175",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503168,
  "published_at": "2025-07-04T10:39:56.392+00:00"
}