regmap: slimbus: fix bus_context pointer in regmap init calls

{
  "id": "42d983fd6bd73da93623bd90e748a3c2fc92d3a0c011485affbba2a18bfa9d49",
  "url": "https://osv.dev/vulnerability/CVE-2025-40317",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "regmap: slimbus: fix bus_context pointer in regmap init calls",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: regmap: slimbus: fix bus_context pointer in regmap init calls Commit 4e65bda8273c (\"ASoC: wcd934x: fix error handling in wcd934x_codec_parse_data()\") revealed the problem in the slimbus regmap. That commit breaks audio playback, for instance, on sdm845 Thundercomm Dragonboard 845c board: Unable to handle kernel paging request at virtual address ffff8000847cbad4 ... CPU: 5 UID: 0 PID: 776 Comm: aplay Not tainted 6.18.0-rc1-00028-g7ea30958b305 #11 PREEMPT Hardware name: Thundercomm Dragonboard 845c (DT) ... Call trace: slim_xfer_msg+0x24/0x1ac [slimbus] (P) slim_read+0x48/0x74 [slimbus] regmap_slimbus_read+0x18/0x24 [regmap_slimbus] _regmap_raw_read+0xe8/0x174 _regmap_bus_read+0x44/0x80 _regmap_read+0x60/0xd8 _regmap_update_bits+0xf4/0x140 _regmap_select_page+0xa8/0x124 _regmap_raw_write_impl+0x3b8/0x65c _regmap_bus_raw_write+0x60/0x80 _regmap_write+0x58/0xc0 regmap_write+0x4c/0x80 wcd934x_hw_params+0x494/0x8b8 [snd_soc_wcd934x] snd_soc_dai_hw_params+0x3c/0x7c [snd_soc_core] __soc_pcm_hw_params+0x22c/0x634 [snd_soc_core] dpcm_be_dai_hw_params+0x1d4/0x38c [snd_soc_core] dpcm_fe_dai_hw_params+0x9c/0x17c [snd_soc_core] snd_pcm_hw_params+0x124/0x464 [snd_pcm] snd_pcm_common_ioctl+0x110c/0x1820 [snd_pcm] snd_pcm_ioctl+0x34/0x4c [snd_pcm] __arm64_sys_ioctl+0xac/0x104 invoke_syscall+0x48/0x104 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x34/0xec el0t_64_sync_handler+0xa0/0xf0 el0t_64_sync+0x198/",
    "evidence": "osv:CVE-2025-40317",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.302",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.247",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.197",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.159",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.117",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.58",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.17.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-40317",
      "aliases": [
        "CVE-2025-40317"
      ],
      "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": "7d6f7fb053ad543da74119df3c4cd7bb46220471"
                },
                {
                  "fixed": "c0f05129e5734ff3fd14b2c242709314d9ca5433"
                },
                {
                  "fixed": "02d3041caaa3fe4dd69e5a8afd1ac6b918ddc6a1"
                },
                {
                  "fixed": "d979639f099c6e51f06ce4dd8d8e56364d6c17ba"
                },
                {
                  "fixed": "8143e4075d131c528540417a51966f6697be14eb"
                },
                {
                  "fixed": "2664bfd8969d1c43dcbe3ea313f130dfa6b74f4c"
                },
                {
                  "fixed": "a16e92f8d7dc7371e68f17a9926cb92d2244be7b"
                },
                {
                  "fixed": "b65f3303349eaee333e47d2a99045aa12fa0c3a7"
                },
                {
                  "fixed": "434f7349a1f00618a620b316f091bd13a12bc8d2"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40317.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.16.0"
                },
                {
                  "fixed": "5.4.302"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "5.10.247"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.197"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.159"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.117"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.58"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.17.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40317.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.079183931Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/02d3041caaa3fe4dd69e5a8afd1ac6b918ddc6a1",
        "https://git.kernel.org/stable/c/2664bfd8969d1c43dcbe3ea313f130dfa6b74f4c",
        "https://git.kernel.org/stable/c/434f7349a1f00618a620b316f091bd13a12bc8d2",
        "https://git.kernel.org/stable/c/8143e4075d131c528540417a51966f6697be14eb",
        "https://git.kernel.org/stable/c/a16e92f8d7dc7371e68f17a9926cb92d2244be7b",
        "https://git.kernel.org/stable/c/b65f3303349eaee333e47d2a99045aa12fa0c3a7",
        "https://git.kernel.org/stable/c/c0f05129e5734ff3fd14b2c242709314d9ca5433",
        "https://git.kernel.org/stable/c/d979639f099c6e51f06ce4dd8d8e56364d6c17ba",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40317.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-40317",
        "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/2025/40xxx/CVE-2025-40317.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-40317",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492201,
  "published_at": "2025-12-08T00:46:44.287+00:00"
}