CVE-2024-26807 (GCVE-0-2024-26807)

Vulnerability from cvelistv5 – Published: 2024-04-04 08:20 – Updated: 2025-11-03 19:29
VLAI?
Title
spi: cadence-qspi: fix pointer reference in runtime PM hooks
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 79acf7fb856eade9c3d0cf00fd34a04bf5c43a1c , < 2c914aac9522f6e93822c18dff233d3e92399c81 (git)
Affected: 2087e85bb66ee3652dafe732bb9b9b896229eafc , < 03f1573c9587029730ca68503f5062105b122f61 (git)
Affected: 2087e85bb66ee3652dafe732bb9b9b896229eafc , < 34e1d5c4407c78de0e3473e1fbf8fb74dbe66d03 (git)
Affected: 2087e85bb66ee3652dafe732bb9b9b896229eafc , < 32ce3bb57b6b402de2aec1012511e7ac4e7449dc (git)
Affected: e3f9fc9a4f1499cc9e1bad4482d377494e367b3d (git)
Affected: 6716203844bc8489af5e5564f0fa31e0c094a7ff (git)
Affected: b24f1ecc8fe2ceefc14af02edb1744c246d87bf7 (git)
Affected: d453f25faf681799d636fe9d6899ad91c45aa11e (git)
Affected: 18cb554e9da81bc4eca653c17a0d65e8b5835c09 (git)
Affected: 1368dbc0a432acf9fc0dcb23bfe52d32ca4c09ab (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.1.140 , ≤ 6.1.* (semver)
Unaffected: 6.6.21 , ≤ 6.6.* (semver)
Unaffected: 6.7.9 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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  • 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.