CVE-2026-98528

Full vulnerability record from the local CVENow database.

Description

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

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-18 16:17:04.303000

Last modified

2026-10-19 10:19:08.137000

View original CVE JSON

{
  "id": "CVE-2026-98528",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-18T16:17:04.303",
  "lastModified": "2026-10-19T10:19:08.137",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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'll 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."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpio/gpiolib-cdev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "d83cee3d2bb131c7fca7e19f1e33dc7530fd7083",
              "lessThan": "8460ee5216ab9a38263b01dca4b0a27e083f70f3",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d83cee3d2bb131c7fca7e19f1e33dc7530fd7083",
              "lessThan": "cf3d043582e106a0e57002bec8a6de8929ba3e1c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d83cee3d2bb131c7fca7e19f1e33dc7530fd7083",
              "lessThan": "60a466f231905cd96ae6f0f3c44a710c97873dac",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d83cee3d2bb131c7fca7e19f1e33dc7530fd7083",
              "lessThan": "1feb5d39b05afd902ed9fc902ec5b15be03a4bdb",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpio/gpiolib-cdev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.9",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.9",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.112",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.55",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.9",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1feb5d39b05afd902ed9fc902ec5b15be03a4bdb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/60a466f231905cd96ae6f0f3c44a710c97873dac",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8460ee5216ab9a38263b01dca4b0a27e083f70f3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cf3d043582e106a0e57002bec8a6de8929ba3e1c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}