CVE-2026-90271 (GCVE-0-2026-90271)
Vulnerability from cvelistv5
Published
2026-09-17 16:08
Modified
2026-10-19 09:00
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: f04046f2577a5c76167333ca99d3903ee5331ba0
Version: f04046f2577a5c76167333ca99d3903ee5331ba0
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/resctrl/mpam_devices.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "status": "unaffected",
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      ],
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          "nodes": [
            {
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
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      "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": "2026-10-19T09:00:48.861Z",
        "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"
        }
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      "title": "arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90271",
    "datePublished": "2026-09-17T16:08:05.304Z",
    "dateReserved": "2026-09-11T19:38:34.797Z",
    "dateUpdated": "2026-10-19T09:00:48.861Z",
    "state": "PUBLISHED"
  },
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