CVE-2025-38383 (GCVE-0-2025-38383)

Vulnerability from cvelistv5 – Published: 2025-07-25 12:53 – Updated: 2026-05-11 21:26
VLAI
Title
mm/vmalloc: fix data race in show_numa_info()
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: fix data race in show_numa_info() The following data-race was found in show_numa_info(): ================================================================== BUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show read to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0: show_numa_info mm/vmalloc.c:4936 [inline] vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016 seq_read_iter+0x373/0xb40 fs/seq_file.c:230 proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299 .... write to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1: show_numa_info mm/vmalloc.c:4934 [inline] vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016 seq_read_iter+0x373/0xb40 fs/seq_file.c:230 proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299 .... value changed: 0x0000008f -> 0x00000000 ================================================================== According to this report,there is a read/write data-race because m->private is accessible to multiple CPUs. To fix this, instead of allocating the heap in proc_vmalloc_init() and passing the heap address to m->private, vmalloc_info_show() should allocate the heap.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8e1d743f2c2671aa54f6f91a2b33823f92512870 , < ead91de35d9cd5c4f80ec51e6020f342079170af (git)
Affected: 8e1d743f2c2671aa54f6f91a2b33823f92512870 , < 5c966f447a584ece3c70395898231aeb56256ee7 (git)
Affected: 8e1d743f2c2671aa54f6f91a2b33823f92512870 , < 5c5f0468d172ddec2e333d738d2a1f85402cf0bc (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.37 , ≤ 6.12.* (semver)
Unaffected: 6.15.6 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/vmalloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ead91de35d9cd5c4f80ec51e6020f342079170af",
              "status": "affected",
              "version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
              "versionType": "git"
            },
            {
              "lessThan": "5c966f447a584ece3c70395898231aeb56256ee7",
              "status": "affected",
              "version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
              "versionType": "git"
            },
            {
              "lessThan": "5c5f0468d172ddec2e333d738d2a1f85402cf0bc",
              "status": "affected",
              "version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/vmalloc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.37",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.6",
              "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": "6.12.37",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.6",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmalloc: fix data race in show_numa_info()\n\nThe following data-race was found in show_numa_info():\n\n==================================================================\nBUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show\n\nread to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0:\n show_numa_info mm/vmalloc.c:4936 [inline]\n vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016\n seq_read_iter+0x373/0xb40 fs/seq_file.c:230\n proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299\n....\n\nwrite to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1:\n show_numa_info mm/vmalloc.c:4934 [inline]\n vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016\n seq_read_iter+0x373/0xb40 fs/seq_file.c:230\n proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299\n....\n\nvalue changed: 0x0000008f -\u003e 0x00000000\n==================================================================\n\nAccording to this report,there is a read/write data-race because\nm-\u003eprivate is accessible to multiple CPUs.  To fix this, instead of\nallocating the heap in proc_vmalloc_init() and passing the heap address to\nm-\u003eprivate, vmalloc_info_show() should allocate the heap."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:26:54.489Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ead91de35d9cd5c4f80ec51e6020f342079170af"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c966f447a584ece3c70395898231aeb56256ee7"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c5f0468d172ddec2e333d738d2a1f85402cf0bc"
        }
      ],
      "title": "mm/vmalloc: fix data race in show_numa_info()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38383",
    "datePublished": "2025-07-25T12:53:24.578Z",
    "dateReserved": "2025-04-16T04:51:24.010Z",
    "dateUpdated": "2026-05-11T21:26:54.489Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-38383",
      "date": "2026-09-29",
      "epss": "0.00118",
      "percentile": "0.01534"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "mm/vmalloc.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "ead91de35d9cd5c4f80ec51e6020f342079170af",
                    "status": "affected",
                    "version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5c966f447a584ece3c70395898231aeb56256ee7",
                    "status": "affected",
                    "version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5c5f0468d172ddec2e333d738d2a1f85402cf0bc",
                    "status": "affected",
                    "version": "8e1d743f2c2671aa54f6f91a2b33823f92512870",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "mm/vmalloc.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.9"
                  },
                  {
                    "lessThan": "6.9",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.37",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.15.*",
                    "status": "unaffected",
                    "version": "6.15.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.16",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "77252A0C-7439-4C11-8298-7DB6F82F4393",
                    "versionEndExcluding": "6.12.37",
                    "versionStartIncluding": "6.9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6E0BB4E0-44BC-4645-83A8-6EA232CE624C",
                    "versionEndExcluding": "6.15.6",
                    "versionStartIncluding": "6.13",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmalloc: fix data race in show_numa_info()\n\nThe following data-race was found in show_numa_info():\n\n==================================================================\nBUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show\n\nread to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0:\n show_numa_info mm/vmalloc.c:4936 [inline]\n vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016\n seq_read_iter+0x373/0xb40 fs/seq_file.c:230\n proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299\n....\n\nwrite to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1:\n show_numa_info mm/vmalloc.c:4934 [inline]\n vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016\n seq_read_iter+0x373/0xb40 fs/seq_file.c:230\n proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299\n....\n\nvalue changed: 0x0000008f -\u003e 0x00000000\n==================================================================\n\nAccording to this report,there is a read/write data-race because\nm-\u003eprivate is accessible to multiple CPUs.  To fix this, instead of\nallocating the heap in proc_vmalloc_init() and passing the heap address to\nm-\u003eprivate, vmalloc_info_show() should allocate the heap."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/vmalloc: correcci\u00f3n de la ejecuci\u00f3n de datos en show_numa_info() Se encontr\u00f3 la siguiente ejecuci\u00f3n de datos en show_numa_info(): ================================================================== BUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show read to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0: show_numa_info mm/vmalloc.c:4936 [inline] vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016 seq_read_iter+0x373/0xb40 fs/seq_file.c:230 proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299 .... write to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1: show_numa_info mm/vmalloc.c:4934 [inline] vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016 seq_read_iter+0x373/0xb40 fs/seq_file.c:230 proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299 .... value changed: 0x0000008f -\u0026gt; 0x00000000 ================================================================== Seg\u00fan este informe, existe una competencia de lectura/escritura de datos porque m-\u0026gt;private es accesible a varias CPU. Para solucionar esto, en lugar de asignar el mont\u00f3n en proc_vmalloc_init() y pasar la direcci\u00f3n del mont\u00f3n a m-\u0026gt;private, vmalloc_info_show() deber\u00eda asignarlo."
          }
        ],
        "id": "CVE-2025-38383",
        "lastModified": "2026-06-17T09:16:44.817",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 4.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-07-25T13:15:27.520",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5c5f0468d172ddec2e333d738d2a1f85402cf0bc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/5c966f447a584ece3c70395898231aeb56256ee7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ead91de35d9cd5c4f80ec51e6020f342079170af"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:05:07+00:00",
      "cve": "CVE-2025-38383",
      "id": "CVE-2025-38383",
      "initial_release_date": "2025-07-25T00:00:00+00:00",
      "product_status:fixed": "616",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "184",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service due to data race in vmalloc\u0027s show_numa_info function",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38383.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.