gsd - gsd-2024-26807

gsd-2024-26807

Vulnerability from gsd

Modified

2024-02-20 06:02

Details

In the Linux kernel, the following vulnerability has been resolved: spi: cadence-qspi: fix pointer reference in runtime PM hooks dev_get_drvdata() gets used to acquire the pointer to cqspi and the SPI controller. Neither embed the other; this lead to memory corruption. On a given platform (Mobileye EyeQ5) the memory corruption is hidden inside cqspi->f_pdata. Also, this uninitialised memory is used as a mutex (ctlr->bus_lock_mutex) by spi_controller_suspend().

Aliases

CVE-2024-26807

JSON

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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
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      "id": "GSD-2024-26807",
      "modified": "2024-02-20T06:02:29.207453Z",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: cadence-qspi: fix pointer reference in runtime PM hooks\n\ndev_get_drvdata() gets used to acquire the pointer to cqspi and the SPI\ncontroller. Neither embed the other; this lead to memory corruption.\n\nOn a given platform (Mobileye EyeQ5) the memory corruption is hidden\ninside cqspi-\u003ef_pdata. Also, this uninitialised memory is used as a\nmutex (ctlr-\u003ebus_lock_mutex) by spi_controller_suspend()."
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          }
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        "id": "CVE-2024-26807",
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        "metrics": {},
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}

cve-2024-26807

Vulnerability from cvelistv5

Published

2024-04-04 08:20

Modified

2024-12-19 08:47

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: Both cadence-quadspi ->runtime_suspend() and ->runtime_resume() implementations start with: struct cqspi_st *cqspi = dev_get_drvdata(dev); struct spi_controller *host = dev_get_drvdata(dev); This obviously cannot be correct, unless "struct cqspi_st" is the first member of " struct spi_controller", or the other way around, but it is not the case. "struct spi_controller" is allocated by devm_spi_alloc_host(), which allocates an extra amount of memory for private data, used to store "struct cqspi_st". The ->probe() function of the cadence-quadspi driver then sets the device drvdata to store the address of the "struct cqspi_st" structure. Therefore: struct cqspi_st *cqspi = dev_get_drvdata(dev); is correct, but: struct spi_controller *host = dev_get_drvdata(dev); is not, as it makes "host" point not to a "struct spi_controller" but to the same "struct cqspi_st" structure as above. This obviously leads to bad things (memory corruption, kernel crashes) directly during ->probe(), as ->probe() enables the device using PM runtime, leading the ->runtime_resume() hook being called, which in turns calls spi_controller_resume() with the wrong pointer. This has at least been reported [0] to cause a kernel crash, but the exact behavior will depend on the memory contents. [0] https://lore.kernel.org/all/20240226121803.5a7r5wkpbbowcxgx@dhruva/ This issue potentially affects all platforms that are currently using the cadence-quadspi driver.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/03f1573c9587029730ca68503f5062105b122f61
	https://git.kernel.org/stable/c/34e1d5c4407c78de0e3473e1fbf8fb74dbe66d03
	https://git.kernel.org/stable/c/32ce3bb57b6b402de2aec1012511e7ac4e7449dc

Impacted products

Vendor

Product

Version

▼

Linux

Version: 2087e85bb66ee3652dafe732bb9b9b896229eafc
Version: 2087e85bb66ee3652dafe732bb9b9b896229eafc
Version: 2087e85bb66ee3652dafe732bb9b9b896229eafc

Linux

Version: 6.4

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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