Vulnerability-Lookup

FKIE_CVE-2026-31485

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-28 13:12

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: spi: spi-fsl-lpspi: fix teardown order issue (UAF) There is a teardown order issue in the driver. The SPI controller is registered using devm_spi_register_controller(), which delays unregistration of the SPI controller until after the fsl_lpspi_remove() function returns. As the fsl_lpspi_remove() function synchronously tears down the DMA channels, a running SPI transfer triggers the following NULL pointer dereference due to use after free: | fsl_lpspi 42550000.spi: I/O Error in DMA RX | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [...] | Call trace: | fsl_lpspi_dma_transfer+0x260/0x340 [spi_fsl_lpspi] | fsl_lpspi_transfer_one+0x198/0x448 [spi_fsl_lpspi] | spi_transfer_one_message+0x49c/0x7c8 | __spi_pump_transfer_message+0x120/0x420 | __spi_sync+0x2c4/0x520 | spi_sync+0x34/0x60 | spidev_message+0x20c/0x378 [spidev] | spidev_ioctl+0x398/0x750 [spidev] [...] Switch from devm_spi_register_controller() to spi_register_controller() in fsl_lpspi_probe() and add the corresponding spi_unregister_controller() in fsl_lpspi_remove().

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e3fd54f8b0317fbccc103961ddd660f2a32dcf0b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	4.10
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-fsl-lpspi: fix teardown order issue (UAF)\n\nThere is a teardown order issue in the driver. The SPI controller is\nregistered using devm_spi_register_controller(), which delays\nunregistration of the SPI controller until after the fsl_lpspi_remove()\nfunction returns.\n\nAs the fsl_lpspi_remove() function synchronously tears down the DMA\nchannels, a running SPI transfer triggers the following NULL pointer\ndereference due to use after free:\n\n| fsl_lpspi 42550000.spi: I/O Error in DMA RX\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[...]\n| Call trace:\n|  fsl_lpspi_dma_transfer+0x260/0x340 [spi_fsl_lpspi]\n|  fsl_lpspi_transfer_one+0x198/0x448 [spi_fsl_lpspi]\n|  spi_transfer_one_message+0x49c/0x7c8\n|  __spi_pump_transfer_message+0x120/0x420\n|  __spi_sync+0x2c4/0x520\n|  spi_sync+0x34/0x60\n|  spidev_message+0x20c/0x378 [spidev]\n|  spidev_ioctl+0x398/0x750 [spidev]\n[...]\n\nSwitch from devm_spi_register_controller() to spi_register_controller() in\nfsl_lpspi_probe() and add the corresponding spi_unregister_controller() in\nfsl_lpspi_remove()."
    }
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  "id": "CVE-2026-31485",
  "lastModified": "2026-04-28T13:12:24.033",
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          "baseScore": 7.8,
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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        "impactScore": 5.9,
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}

CVE-2026-31485 (GCVE-0-2026-31485)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-05-11 22:09

Title

spi: spi-fsl-lpspi: fix teardown order issue (UAF)

Summary

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/fbe6f40caeebb0b1e…
https://git.kernel.org/stable/c/ca4483f36ac1b62e6…
https://git.kernel.org/stable/c/e3fd54f8b0317fbcc…
https://git.kernel.org/stable/c/adb25339b66112393…
https://git.kernel.org/stable/c/d5d01f24bc6fbde40…
https://git.kernel.org/stable/c/e89e2b97253c124d3…
https://git.kernel.org/stable/c/15650dfbaeeb14bca…
https://git.kernel.org/stable/c/b341c1176f2e001b3…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6 (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < ca4483f36ac1b62e69f8b182c5b8f059e0abecfb (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < e3fd54f8b0317fbccc103961ddd660f2a32dcf0b (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < adb25339b66112393fd6892ceff926765feb5b86 (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < d5d01f24bc6fbde40b4e567ef9160194b61267bc (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3 (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < 15650dfbaeeb14bcaaf053b93cf631db8d465300 (git) Affected: 5314987de5e5f5e38436ef4a69328bc472bbd63e , < b341c1176f2e001b3adf0b47154fc31589f7410e (git)
Linux	Linux	Affected: 4.10 Unaffected: 0 , < 4.10 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 6.6.* (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)

Show details on NVD website

JSON

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{
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-fsl-lpspi: fix teardown order issue (UAF)\n\nThere is a teardown order issue in the driver. The SPI controller is\nregistered using devm_spi_register_controller(), which delays\nunregistration of the SPI controller until after the fsl_lpspi_remove()\nfunction returns.\n\nAs the fsl_lpspi_remove() function synchronously tears down the DMA\nchannels, a running SPI transfer triggers the following NULL pointer\ndereference due to use after free:\n\n| fsl_lpspi 42550000.spi: I/O Error in DMA RX\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[...]\n| Call trace:\n|  fsl_lpspi_dma_transfer+0x260/0x340 [spi_fsl_lpspi]\n|  fsl_lpspi_transfer_one+0x198/0x448 [spi_fsl_lpspi]\n|  spi_transfer_one_message+0x49c/0x7c8\n|  __spi_pump_transfer_message+0x120/0x420\n|  __spi_sync+0x2c4/0x520\n|  spi_sync+0x34/0x60\n|  spidev_message+0x20c/0x378 [spidev]\n|  spidev_ioctl+0x398/0x750 [spidev]\n[...]\n\nSwitch from devm_spi_register_controller() to spi_register_controller() in\nfsl_lpspi_probe() and add the corresponding spi_unregister_controller() in\nfsl_lpspi_remove()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:09:38.585Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3fd54f8b0317fbccc103961ddd660f2a32dcf0b"
        },
        {
          "url": "https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3"
        },
        {
          "url": "https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300"
        },
        {
          "url": "https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e"
        }
      ],
      "title": "spi: spi-fsl-lpspi: fix teardown order issue (UAF)",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31485",
    "datePublished": "2026-04-22T13:54:10.892Z",
    "dateReserved": "2026-03-09T15:48:24.101Z",
    "dateUpdated": "2026-05-11T22:09:38.585Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

Action not permitted

FKIE_CVE-2026-31485

CVE-2026-31485 (GCVE-0-2026-31485)

Tags

Sightings

Nomenclature