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GHSA-JMR2-WXVX-W46R

Vulnerability from github – Published: 2025-07-25 18:30 – Updated: 2025-11-19 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data

When num_parents is 4, __clk_register() occurs an out-of-bounds when accessing parent_names member. Use ARRAY_SIZE() instead of hardcode number here.

BUG: KASAN: global-out-of-bounds in __clk_register+0x1844/0x20d8 Read of size 8 at addr ffff800086988e78 by task kworker/u24:3/59 Hardware name: NXP i.MX95 19X19 board (DT) Workqueue: events_unbound deferred_probe_work_func Call trace: dump_backtrace+0x94/0xec show_stack+0x18/0x24 dump_stack_lvl+0x8c/0xcc print_report+0x398/0x5fc kasan_report+0xd4/0x114 __asan_report_load8_noabort+0x20/0x2c __clk_register+0x1844/0x20d8 clk_hw_register+0x44/0x110 __clk_hw_register_mux+0x284/0x3a8 imx95_bc_probe+0x4f4/0xa70

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38446"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-25T16:15:30Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data\n\nWhen num_parents is 4, __clk_register() occurs an out-of-bounds\nwhen accessing parent_names member. Use ARRAY_SIZE() instead of\nhardcode number here.\n\n BUG: KASAN: global-out-of-bounds in __clk_register+0x1844/0x20d8\n Read of size 8 at addr ffff800086988e78 by task kworker/u24:3/59\n  Hardware name: NXP i.MX95 19X19 board (DT)\n  Workqueue: events_unbound deferred_probe_work_func\n  Call trace:\n    dump_backtrace+0x94/0xec\n    show_stack+0x18/0x24\n    dump_stack_lvl+0x8c/0xcc\n    print_report+0x398/0x5fc\n    kasan_report+0xd4/0x114\n    __asan_report_load8_noabort+0x20/0x2c\n    __clk_register+0x1844/0x20d8\n    clk_hw_register+0x44/0x110\n    __clk_hw_register_mux+0x284/0x3a8\n    imx95_bc_probe+0x4f4/0xa70",
  "id": "GHSA-jmr2-wxvx-w46r",
  "modified": "2025-11-19T18:31:16Z",
  "published": "2025-07-25T18:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38446"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a956daad67cec454ee985e103e167711fab5b9b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aacc875a448d363332b9df0621dde6d3a225ea9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcee75daecc5234ee3482d8cf3518bf021d8a0a5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38446 (GCVE-0-2025-38446)

Vulnerability from cvelistv5 – Published: 2025-07-25 15:27 – Updated: 2026-08-05 12:01

Title

clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data

Summary

In the Linux kernel, the following vulnerability has been resolved: clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data When num_parents is 4, __clk_register() occurs an out-of-bounds when accessing parent_names member. Use ARRAY_SIZE() instead of hardcode number here. BUG: KASAN: global-out-of-bounds in __clk_register+0x1844/0x20d8 Read of size 8 at addr ffff800086988e78 by task kworker/u24:3/59 Hardware name: NXP i.MX95 19X19 board (DT) Workqueue: events_unbound deferred_probe_work_func Call trace: dump_backtrace+0x94/0xec show_stack+0x18/0x24 dump_stack_lvl+0x8c/0xcc print_report+0x398/0x5fc kasan_report+0xd4/0x114 __asan_report_load8_noabort+0x20/0x2c __clk_register+0x1844/0x20d8 clk_hw_register+0x44/0x110 __clk_hw_register_mux+0x284/0x3a8 imx95_bc_probe+0x4f4/0xa70

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/fcee75daecc5234ee…
https://git.kernel.org/stable/c/a956daad67cec454e…
https://git.kernel.org/stable/c/aacc875a448d36333…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5224b189462ff70df328f173b71acfd925092c3c , < fcee75daecc5234ee3482d8cf3518bf021d8a0a5 (git) Affected: 5224b189462ff70df328f173b71acfd925092c3c , < a956daad67cec454ee985e103e167711fab5b9b8 (git) Affected: 5224b189462ff70df328f173b71acfd925092c3c , < aacc875a448d363332b9df0621dde6d3a225ea9f (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.12.39 , ≤ 6.12.* (semver) Unaffected: 6.15.7 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/imx/clk-imx95-blk-ctl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fcee75daecc5234ee3482d8cf3518bf021d8a0a5",
              "status": "affected",
              "version": "5224b189462ff70df328f173b71acfd925092c3c",
              "versionType": "git"
            },
            {
              "lessThan": "a956daad67cec454ee985e103e167711fab5b9b8",
              "status": "affected",
              "version": "5224b189462ff70df328f173b71acfd925092c3c",
              "versionType": "git"
            },
            {
              "lessThan": "aacc875a448d363332b9df0621dde6d3a225ea9f",
              "status": "affected",
              "version": "5224b189462ff70df328f173b71acfd925092c3c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/imx/clk-imx95-blk-ctl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.39",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.7",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data\n\nWhen num_parents is 4, __clk_register() occurs an out-of-bounds\nwhen accessing parent_names member. Use ARRAY_SIZE() instead of\nhardcode number here.\n\n BUG: KASAN: global-out-of-bounds in __clk_register+0x1844/0x20d8\n Read of size 8 at addr ffff800086988e78 by task kworker/u24:3/59\n  Hardware name: NXP i.MX95 19X19 board (DT)\n  Workqueue: events_unbound deferred_probe_work_func\n  Call trace:\n    dump_backtrace+0x94/0xec\n    show_stack+0x18/0x24\n    dump_stack_lvl+0x8c/0xcc\n    print_report+0x398/0x5fc\n    kasan_report+0xd4/0x114\n    __asan_report_load8_noabort+0x20/0x2c\n    __clk_register+0x1844/0x20d8\n    clk_hw_register+0x44/0x110\n    __clk_hw_register_mux+0x284/0x3a8\n    imx95_bc_probe+0x4f4/0xa70"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The faulty code is reached only through the i.MX95 platform driver probe path driven by the device tree (boot or deferred-probe workqueue), and can be re-triggered locally via module reload or sysfs driver bind; there is no network, adjacent-network, or physical-interface path to it.\nAC:L - The out-of-bounds access is unconditional and deterministic \u2014 every probe of the dispmix CSR block reads `parent_names[3]` past the 3-element array, with no race, timing window, or memory-layout condition involved.\nPR:L - No privileges are needed for the defect to fire, since it executes automatically during driver probe on affected hardware; deliberate re-triggering via bind/unbind or module reload would need local privileges, so at most low privileges are involved.\nUI:N - The out-of-bounds read happens automatically during device probe from the device tree with no victim action required.\nS:U - The out-of-bounds read, the wild dereference, and the corrupted clk parent map are all confined to the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The out-of-bounds pointer is not merely read but handed to `kstrdup_const()`/`kstrdup()`, so an unbounded `strlen()`/copy is performed from an out-of-bounds-derived address and the resulting kernel memory contents are stored as a clk parent name exposed through the clk debugfs interface.\nI:L - The garbage value is persisted into the kernel\u0027s clk parent map, corrupting clock-topology state for a 2-bit mux that can select the bogus index 3; there is no arbitrary-write or control-flow primitive, so the modification is limited.\nA:H - Dereferencing the out-of-bounds value as a string pointer typically faults on an invalid address, producing a kernel oops in the deferred-probe kworker during boot, and even without a fault the display-engine clock is left orphaned and non-functional."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:01:57.158Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fcee75daecc5234ee3482d8cf3518bf021d8a0a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a956daad67cec454ee985e103e167711fab5b9b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/aacc875a448d363332b9df0621dde6d3a225ea9f"
        }
      ],
      "title": "clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38446",
    "datePublished": "2025-07-25T15:27:28.699Z",
    "dateReserved": "2025-04-16T04:51:24.017Z",
    "dateUpdated": "2026-08-05T12:01:57.158Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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