CVE-2026-31487 (GCVE-0-2026-31487)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-04-22 13:54
VLAI?
Title
spi: use generic driver_override infrastructure
Summary
In the Linux kernel, the following vulnerability has been resolved: spi: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1] Also note that we do not enable the driver_override feature of struct bus_type, as SPI - in contrast to most other buses - passes "" to sysfs_emit() when the driver_override pointer is NULL. Thus, printing "\n" instead of "(null)\n".
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5039563e7c25eccd7fec1de6706011009d1c5665 , < eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0 (git)
Affected: 5039563e7c25eccd7fec1de6706011009d1c5665 , < c73a58661a760373d08a6883af4f0bb5cc991a67 (git)
Affected: 5039563e7c25eccd7fec1de6706011009d1c5665 , < e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0 (git)
Affected: 5039563e7c25eccd7fec1de6706011009d1c5665 , < cc34d77dd48708d810c12bfd6f5bf03304f6c824 (git)
Create a notification for this product.
    Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi.c",
            "include/linux/spi/spi.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0",
              "status": "affected",
              "version": "5039563e7c25eccd7fec1de6706011009d1c5665",
              "versionType": "git"
            },
            {
              "lessThan": "c73a58661a760373d08a6883af4f0bb5cc991a67",
              "status": "affected",
              "version": "5039563e7c25eccd7fec1de6706011009d1c5665",
              "versionType": "git"
            },
            {
              "lessThan": "e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0",
              "status": "affected",
              "version": "5039563e7c25eccd7fec1de6706011009d1c5665",
              "versionType": "git"
            },
            {
              "lessThan": "cc34d77dd48708d810c12bfd6f5bf03304f6c824",
              "status": "affected",
              "version": "5039563e7c25eccd7fec1de6706011009d1c5665",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/spi/spi.c",
            "include/linux/spi/spi.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.80",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus\u0027 match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]\n\nAlso note that we do not enable the driver_override feature of struct\nbus_type, as SPI - in contrast to most other buses - passes \"\" to\nsysfs_emit() when the driver_override pointer is NULL. Thus, printing\n\"\\n\" instead of \"(null)\\n\"."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:54:12.290Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824"
        }
      ],
      "title": "spi: use generic driver_override infrastructure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31487",
    "datePublished": "2026-04-22T13:54:12.290Z",
    "dateReserved": "2026-03-09T15:48:24.101Z",
    "dateUpdated": "2026-04-22T13:54:12.290Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-31487\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-22T14:16:46.307\",\"lastModified\":\"2026-04-22T14:16:46.307\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nspi: use generic driver_override infrastructure\\n\\nWhen a driver is probed through __driver_attach(), the bus\u0027 match()\\ncallback is called without the device lock held, thus accessing the\\ndriver_override field without a lock, which can cause a UAF.\\n\\nFix this by using the driver-core driver_override infrastructure taking\\ncare of proper locking internally.\\n\\nNote that calling match() from __driver_attach() without the device lock\\nheld is intentional. [1]\\n\\nAlso note that we do not enable the driver_override feature of struct\\nbus_type, as SPI - in contrast to most other buses - passes \\\"\\\" to\\nsysfs_emit() when the driver_override pointer is NULL. Thus, printing\\n\\\"\\\\n\\\" instead of \\\"(null)\\\\n\\\".\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.