Vulnerability-Lookup

GHSA-8XC6-54P8-3P65

Vulnerability from github – Published: 2024-04-04 09:30 – Updated: 2025-11-03 21:31

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().

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26807"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-04T09:15:09Z",
    "severity": "MODERATE"
  },
  "details": "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().",
  "id": "GHSA-8xc6-54p8-3p65",
  "modified": "2025-11-03T21:31:02Z",
  "published": "2024-04-04T09:30:36Z",
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26807"
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}

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

Vulnerability from cvelistv5 – Published: 2024-04-04 08:20 – Updated: 2026-08-05 11:27

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

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:50 UTC

Assigner

Linux mitre root Scorecard

References

5 references

URL	Tags
https://git.kernel.org/stable/c/2c914aac9522f6e93…
https://git.kernel.org/stable/c/03f1573c958702973…
https://git.kernel.org/stable/c/34e1d5c4407c78de0…
https://git.kernel.org/stable/c/32ce3bb57b6b402de…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 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) Affected: 6.1.28 , < 6.1.140 (semver) Affected: 4.19.283 , < 4.20 (semver) Affected: 5.4.243 , < 5.5 (semver) Affected: 5.10.180 , < 5.11 (semver) Affected: 5.15.111 , < 5.16 (semver) Affected: 6.2.15 , < 6.3 (semver) Affected: 6.3.2 , < 6.4 (semver)
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)

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JSON

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              "value": "AV:L - The vulnerable code is the runtime-PM hook of an on-SoC Cadence QSPI controller driver, reached through local flash I/O (MTD/mtdblock access driving `cqspi_exec_mem_op()` \u2192 `pm_runtime_resume_and_get()`) or the autosuspend timer. There is no network or remote-peer input path into this driver.\nAC:L - The wrong pointer is passed unconditionally on every suspend and resume, so the corrupting code path executes deterministically at probe time and on each runtime-PM transition; no race, timing window, or uncontrolled precondition needs to be won.\nPR:L - Any unprivileged local process can drive the cycle by touching a file on the flash-backed filesystem and then idling for the 2-second autosuspend timeout; no capability, CAP_SYS_ADMIN, or device-node ownership check exists anywhere along `cqspi_exec_mem_op()` \u2192 runtime PM \u2192 `cqspi_suspend()/cqspi_resume()`.\nUI:N - Autosuspend/resume transitions occur automatically from normal device activity and the 2 s idle timer, and the corruption already happens during probe; no victim action of any kind is required.\nS:U - The corruption is confined to kernel slab memory and the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a type confusion in which `struct cqspi_st` is treated as `struct spi_controller`, causing reads and writes at offsets (`bus_lock_mutex` ~930B, `queued`, `kworker`) that fall into `f_pdata` or past the end of the `devm_spi_alloc_host()` allocation; such heap corruption with a groomable adjacent object can be leveraged into an arbitrary-read primitive.\nI:H - Type confusion with out-of-bounds writes \u2014 `ctlr-\u003eflags |=`, the mutex owner word, and `list_add_tail()` on an uninitialised `wait_list` in the mutex slowpath \u2014 plus `kthread_queue_work()` on a garbage `ctlr-\u003ekworker` pointer, gives write and control-flow corruption primitives rather than a benign fault.\nA:H - The upstream fix and the linked bug report document kernel crashes and memory corruption during probe; `mutex_lock()` on uninitialised memory can also hang the task indefinitely, and the path can be re-triggered repeatedly by an unprivileged user."
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-8XC6-54P8-3P65

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

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