github - ghsa-77g4-pmv2-vcjj

GHSA-77G4-PMV2-VCJJ

Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-02-18 18:33

Details

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

clk: clk-loongson2: Fix potential buffer overflow in flexible-array member access

Flexible-array member hws in struct clk_hw_onecell_data is annotated with the counted_by() attribute. This means that when memory is allocated for this array, the counter, which in this case is member num in the flexible structure, should be set to the maximum number of elements the flexible array can contain, or fewer.

In this case, the total number of elements for the flexible array is determined by variable clks_num when allocating heap space via devm_kzalloc(), as shown below:

289 struct loongson2_clk_provider *clp; ... 296 for (p = data; p->name; p++) 297 clks_num++; 298 299 clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num), 300 GFP_KERNEL);

So, clp->clk_data.num should be set to clks_num or less, and not exceed clks_num, as is currently the case. Otherwise, if data is written into clp->clk_data.hws[clks_num], the instrumentation provided by the compiler won't detect the overflow, leading to a memory corruption bug at runtime.

Fix this issue by setting clp->clk_data.num to clks_num.

Severity ?

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-53192"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T14:15:26Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: clk-loongson2: Fix potential buffer overflow in flexible-array member access\n\nFlexible-array member `hws` in `struct clk_hw_onecell_data` is annotated\nwith the `counted_by()` attribute. This means that when memory is\nallocated for this array, the _counter_, which in this case is member\n`num` in the flexible structure, should be set to the maximum number of\nelements the flexible array can contain, or fewer.\n\nIn this case, the total number of elements for the flexible array is\ndetermined by variable `clks_num` when allocating heap space via\n`devm_kzalloc()`, as shown below:\n\n289         struct loongson2_clk_provider *clp;\n\t...\n296         for (p = data; p-\u003ename; p++)\n297                 clks_num++;\n298\n299         clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num),\n300                            GFP_KERNEL);\n\nSo, `clp-\u003eclk_data.num` should be set to `clks_num` or less, and not\nexceed `clks_num`, as is currently the case. Otherwise, if data is\nwritten into `clp-\u003eclk_data.hws[clks_num]`, the instrumentation\nprovided by the compiler won\u0027t detect the overflow, leading to a\nmemory corruption bug at runtime.\n\nFix this issue by setting `clp-\u003eclk_data.num` to `clks_num`.",
  "id": "GHSA-77g4-pmv2-vcjj",
  "modified": "2025-02-18T18:33:09Z",
  "published": "2024-12-27T15:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53192"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02fb4f0084331ef72c28d0c70fcb15d1bea369ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bf8877150128c3abd9d233886a05f6966fbf0c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b96fc194984d0c82de1ca2b4166b35b1298b216c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-53192 (GCVE-0-2024-53192)

Vulnerability from cvelistv5 – Published: 2024-12-27 13:49 – Updated: 2025-05-04 09:55

Title

clk: clk-loongson2: Fix potential buffer overflow in flexible-array member access

Summary

In the Linux kernel, the following vulnerability has been resolved: clk: clk-loongson2: Fix potential buffer overflow in flexible-array member access Flexible-array member `hws` in `struct clk_hw_onecell_data` is annotated with the `counted_by()` attribute. This means that when memory is allocated for this array, the _counter_, which in this case is member `num` in the flexible structure, should be set to the maximum number of elements the flexible array can contain, or fewer. In this case, the total number of elements for the flexible array is determined by variable `clks_num` when allocating heap space via `devm_kzalloc()`, as shown below: 289 struct loongson2_clk_provider *clp; ... 296 for (p = data; p->name; p++) 297 clks_num++; 298 299 clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num), 300 GFP_KERNEL); So, `clp->clk_data.num` should be set to `clks_num` or less, and not exceed `clks_num`, as is currently the case. Otherwise, if data is written into `clp->clk_data.hws[clks_num]`, the instrumentation provided by the compiler won't detect the overflow, leading to a memory corruption bug at runtime. Fix this issue by setting `clp->clk_data.num` to `clks_num`.

Severity ?

5.5 (Medium)


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

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/b96fc194984d0c82d…
	https://git.kernel.org/stable/c/1bf8877150128c3ab…
	https://git.kernel.org/stable/c/02fb4f0084331ef72…

Impacted products

Vendor

Product

Version

Linux

Affected: 9796ec0bd04bb0e70487127d44949ca0554df5d3 , < b96fc194984d0c82de1ca2b4166b35b1298b216c (git)
Affected: 9796ec0bd04bb0e70487127d44949ca0554df5d3 , < 1bf8877150128c3abd9d233886a05f6966fbf0c7 (git)
Affected: 9796ec0bd04bb0e70487127d44949ca0554df5d3 , < 02fb4f0084331ef72c28d0c70fcb15d1bea369ec (git)

Linux

Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.11.11 , ≤ 6.11.* (semver)
Unaffected: 6.12.2 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-53192",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-18T16:03:52.402922Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-120",
                "description": "CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-18T16:06:09.354Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/clk-loongson2.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b96fc194984d0c82de1ca2b4166b35b1298b216c",
              "status": "affected",
              "version": "9796ec0bd04bb0e70487127d44949ca0554df5d3",
              "versionType": "git"
            },
            {
              "lessThan": "1bf8877150128c3abd9d233886a05f6966fbf0c7",
              "status": "affected",
              "version": "9796ec0bd04bb0e70487127d44949ca0554df5d3",
              "versionType": "git"
            },
            {
              "lessThan": "02fb4f0084331ef72c28d0c70fcb15d1bea369ec",
              "status": "affected",
              "version": "9796ec0bd04bb0e70487127d44949ca0554df5d3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/clk-loongson2.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": "6.11.*",
              "status": "unaffected",
              "version": "6.11.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.11",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.2",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "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: clk-loongson2: Fix potential buffer overflow in flexible-array member access\n\nFlexible-array member `hws` in `struct clk_hw_onecell_data` is annotated\nwith the `counted_by()` attribute. This means that when memory is\nallocated for this array, the _counter_, which in this case is member\n`num` in the flexible structure, should be set to the maximum number of\nelements the flexible array can contain, or fewer.\n\nIn this case, the total number of elements for the flexible array is\ndetermined by variable `clks_num` when allocating heap space via\n`devm_kzalloc()`, as shown below:\n\n289         struct loongson2_clk_provider *clp;\n\t...\n296         for (p = data; p-\u003ename; p++)\n297                 clks_num++;\n298\n299         clp = devm_kzalloc(dev, struct_size(clp, clk_data.hws, clks_num),\n300                            GFP_KERNEL);\n\nSo, `clp-\u003eclk_data.num` should be set to `clks_num` or less, and not\nexceed `clks_num`, as is currently the case. Otherwise, if data is\nwritten into `clp-\u003eclk_data.hws[clks_num]`, the instrumentation\nprovided by the compiler won\u0027t detect the overflow, leading to a\nmemory corruption bug at runtime.\n\nFix this issue by setting `clp-\u003eclk_data.num` to `clks_num`."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:55:24.466Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b96fc194984d0c82de1ca2b4166b35b1298b216c"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bf8877150128c3abd9d233886a05f6966fbf0c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/02fb4f0084331ef72c28d0c70fcb15d1bea369ec"
        }
      ],
      "title": "clk: clk-loongson2: Fix potential buffer overflow in flexible-array member access",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53192",
    "datePublished": "2024-12-27T13:49:34.608Z",
    "dateReserved": "2024-11-19T17:17:25.013Z",
    "dateUpdated": "2025-05-04T09:55:24.466Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-77G4-PMV2-VCJJ

CVE-2024-53192 (GCVE-0-2024-53192)

Tags

Sightings

Nomenclature