CVE-2026-98528 (GCVE-0-2026-98528)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:17 – Updated: 2026-10-19 09:21
VLAI
Title
gpio: cdev: fix kernel stack leak to user-space in error path
Summary
In the Linux kernel, the following vulnerability has been resolved: gpio: cdev: fix kernel stack leak to user-space in error path If we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we return immediately before zeroing the info struct we'll end up passing to the user-space later in lineinfo_get_v1(). This may leak the kernel stack contents. Make gpio_desc_to_lineinfo() return int so that the -ENODEV returned on failure to acquire the guard can be propagated to the callers. While not strictly necessary: move the memset() before trying to acquire the SRCU read lock too for good measure.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 , < 8460ee5216ab9a38263b01dca4b0a27e083f70f3 (git)
Affected: d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 , < cf3d043582e106a0e57002bec8a6de8929ba3e1c (git)
Affected: d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 , < 60a466f231905cd96ae6f0f3c44a710c97873dac (git)
Affected: d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 , < 1feb5d39b05afd902ed9fc902ec5b15be03a4bdb (git)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpiolib-cdev.c"
          ],
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          "vendor": "Linux",
          "versions": [
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          "versions": [
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              "negate": false,
              "operator": "OR"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: cdev: fix kernel stack leak to user-space in error path\n\nIf we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we\nreturn immediately before zeroing the info struct we\u0027ll end up passing\nto the user-space later in lineinfo_get_v1(). This may leak the kernel\nstack contents. Make gpio_desc_to_lineinfo() return int so that the\n-ENODEV returned on failure to acquire the guard can be propagated to\nthe callers.\n\nWhile not strictly necessary: move the memset() before trying to acquire\nthe SRCU read lock too for good measure."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:21:10.272Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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    "datePublished": "2026-10-18T15:17:46.695Z",
    "dateReserved": "2026-09-25T10:25:14.355Z",
    "dateUpdated": "2026-10-19T09:21:10.272Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "date": "2026-10-26",
      "epss": "0.00209",
      "percentile": "0.10989"
    },
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      "id": "msrc_CVE-2026-98528",
      "initial_release_date": "2026-10-20T22:24:31.000Z",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
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      "version": "2"
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    "nvd": {
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: cdev: fix kernel stack leak to user-space in error path\n\nIf we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we\nreturn immediately before zeroing the info struct we\u0027ll end up passing\nto the user-space later in lineinfo_get_v1(). This may leak the kernel\nstack contents. Make gpio_desc_to_lineinfo() return int so that the\n-ENODEV returned on failure to acquire the guard can be propagated to\nthe callers.\n\nWhile not strictly necessary: move the memset() before trying to acquire\nthe SRCU read lock too for good measure."
          }
        ],
        "id": "CVE-2026-98528",
        "lastModified": "2026-10-19T10:19:08.137",
        "metrics": {},
        "published": "2026-10-18T16:17:04.303",
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      "status": "interim",
      "title": "SUSE CVE CVE-2026-98528",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98528.json",
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  }
}



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