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GHSA-P39C-XJ5C-VGMF

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

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

arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt

If a user unbinds an MSC after mpam_disable() has been run in response to an error interrupt then a dereference of a NULL pointer occurs as mpam_disable() sets the drvdata to NULL. Add an early return to the driver remove callback to avoid this.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90271"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:23Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt\n\nIf a user unbinds an MSC after mpam_disable() has been run in response\nto an error interrupt then a dereference of a NULL pointer occurs as\nmpam_disable() sets the drvdata to NULL. Add an early return to the driver\nremove callback to avoid this.",
  "id": "GHSA-p39c-xj5c-vgmf",
  "modified": "2026-09-17T18:31:58Z",
  "published": "2026-09-17T18:31:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90271"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a29044c9c83513c7463de2adb84c169685562ad2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc996c39689bb15aa80e5366809434f7258fb703"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90271 (GCVE-0-2026-90271)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:08 – Updated: 2026-09-17 16:08

Title

arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt

Summary

In the Linux kernel, the following vulnerability has been resolved: arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt If a user unbinds an MSC after mpam_disable() has been run in response to an error interrupt then a dereference of a NULL pointer occurs as mpam_disable() sets the drvdata to NULL. Add an early return to the driver remove callback to avoid this.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/a29044c9c83513c74…
https://git.kernel.org/stable/c/fc996c39689bb15aa…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f04046f2577a5c76167333ca99d3903ee5331ba0 , < a29044c9c83513c7463de2adb84c169685562ad2 (git) Affected: f04046f2577a5c76167333ca99d3903ee5331ba0 , < fc996c39689bb15aa80e5366809434f7258fb703 (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/resctrl/mpam_devices.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a29044c9c83513c7463de2adb84c169685562ad2",
              "status": "affected",
              "version": "f04046f2577a5c76167333ca99d3903ee5331ba0",
              "versionType": "git"
            },
            {
              "lessThan": "fc996c39689bb15aa80e5366809434f7258fb703",
              "status": "affected",
              "version": "f04046f2577a5c76167333ca99d3903ee5331ba0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/resctrl/mpam_devices.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt\n\nIf a user unbinds an MSC after mpam_disable() has been run in response\nto an error interrupt then a dereference of a NULL pointer occurs as\nmpam_disable() sets the drvdata to NULL. Add an early return to the driver\nremove callback to avoid this."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:08:05.304Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a29044c9c83513c7463de2adb84c169685562ad2"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc996c39689bb15aa80e5366809434f7258fb703"
        }
      ],
      "title": "arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90271",
    "datePublished": "2026-09-17T16:08:05.304Z",
    "dateReserved": "2026-09-11T19:38:34.797Z",
    "dateUpdated": "2026-09-17T16:08:05.304Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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GHSA-P39C-XJ5C-VGMF

CVE-2026-90271 (GCVE-0-2026-90271)

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