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

Vulnerability from cvelistv5 – Published: 2024-04-04 08:20 – Updated: 2026-08-05 11:27
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
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
References
Impacted products
Vendor Product Version CPE status
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)
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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)
guessed Create a notification for this product.
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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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    "cveId": "CVE-2024-26807",
    "datePublished": "2024-04-04T08:20:34.155Z",
    "dateReserved": "2024-02-19T14:20:24.179Z",
    "dateUpdated": "2026-08-05T11:27:25.924Z",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBoth cadence-quadspi -\u003eruntime_suspend() and -\u003eruntime_resume()\nimplementations start with:\n\n\tstruct cqspi_st *cqspi = dev_get_drvdata(dev);\n\tstruct spi_controller *host = dev_get_drvdata(dev);\n\nThis obviously cannot be correct, unless \"struct cqspi_st\" is the\nfirst member of \" struct spi_controller\", or the other way around, but\nit is not the case. \"struct spi_controller\" is allocated by\ndevm_spi_alloc_host(), which allocates an extra amount of memory for\nprivate data, used to store \"struct cqspi_st\".\n\nThe -\u003eprobe() function of the cadence-quadspi driver then sets the\ndevice drvdata to store the address of the \"struct cqspi_st\"\nstructure. Therefore:\n\n\tstruct cqspi_st *cqspi = dev_get_drvdata(dev);\n\nis correct, but:\n\n\tstruct spi_controller *host = dev_get_drvdata(dev);\n\nis not, as it makes \"host\" point not to a \"struct spi_controller\" but\nto the same \"struct cqspi_st\" structure as above.\n\nThis obviously leads to bad things (memory corruption, kernel crashes)\ndirectly during -\u003eprobe(), as -\u003eprobe() enables the device using PM\nruntime, leading the -\u003eruntime_resume() hook being called, which in\nturns calls spi_controller_resume() with the wrong pointer.\n\nThis has at least been reported [0] to cause a kernel crash, but the\nexact behavior will depend on the memory contents.\n\n[0] https://lore.kernel.org/all/20240226121803.5a7r5wkpbbowcxgx@dhruva/\n\nThis issue potentially affects all platforms that are currently using\nthe cadence-quadspi driver."
        },
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          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: cadence-qspi: corrige la referencia del puntero en los ganchos PM en tiempo de ejecuci\u00f3n dev_get_drvdata() se utiliza para adquirir el puntero a cqspi y el controlador SPI. Ninguno de los dos integra al otro; Esto conduce a la corrupci\u00f3n de la memoria. En una plataforma determinada (Mobileye EyeQ5), la corrupci\u00f3n de la memoria est\u00e1 oculta dentro de cqspi-\u0026gt;f_pdata. Adem\u00e1s, esta memoria no inicializada se utiliza como mutex (ctlr-\u0026gt;bus_lock_mutex) por spi_controller_suspend()."
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                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.21",
                      "versionStartIncluding": "6.4",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.7.9",
                      "versionStartIncluding": "6.4",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8",
                      "versionStartIncluding": "6.4",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.19.283",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.4.243",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.10.180",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.15.111",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "6.2.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "6.3.2",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBoth cadence-quadspi -\u003eruntime_suspend() and -\u003eruntime_resume()\nimplementations start with:\n\n\tstruct cqspi_st *cqspi = dev_get_drvdata(dev);\n\tstruct spi_controller *host = dev_get_drvdata(dev);\n\nThis obviously cannot be correct, unless \"struct cqspi_st\" is the\nfirst member of \" struct spi_controller\", or the other way around, but\nit is not the case. \"struct spi_controller\" is allocated by\ndevm_spi_alloc_host(), which allocates an extra amount of memory for\nprivate data, used to store \"struct cqspi_st\".\n\nThe -\u003eprobe() function of the cadence-quadspi driver then sets the\ndevice drvdata to store the address of the \"struct cqspi_st\"\nstructure. Therefore:\n\n\tstruct cqspi_st *cqspi = dev_get_drvdata(dev);\n\nis correct, but:\n\n\tstruct spi_controller *host = dev_get_drvdata(dev);\n\nis not, as it makes \"host\" point not to a \"struct spi_controller\" but\nto the same \"struct cqspi_st\" structure as above.\n\nThis obviously leads to bad things (memory corruption, kernel crashes)\ndirectly during -\u003eprobe(), as -\u003eprobe() enables the device using PM\nruntime, leading the -\u003eruntime_resume() hook being called, which in\nturns calls spi_controller_resume() with the wrong pointer.\n\nThis has at least been reported [0] to cause a kernel crash, but the\nexact behavior will depend on the memory contents.\n\n[0] https://lore.kernel.org/all/20240226121803.5a7r5wkpbbowcxgx@dhruva/\n\nThis issue potentially affects all platforms that are currently using\nthe cadence-quadspi driver."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "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."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:27:25.924Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/2c914aac9522f6e93822c18dff233d3e92399c81"
            },
            {
              "url": "https://git.kernel.org/stable/c/03f1573c9587029730ca68503f5062105b122f61"
            },
            {
              "url": "https://git.kernel.org/stable/c/34e1d5c4407c78de0e3473e1fbf8fb74dbe66d03"
            },
            {
              "url": "https://git.kernel.org/stable/c/32ce3bb57b6b402de2aec1012511e7ac4e7449dc"
            }
          ],
          "title": "spi: cadence-qspi: fix pointer reference in runtime PM hooks",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26807",
        "datePublished": "2024-04-04T08:20:34.155Z",
        "dateReserved": "2024-02-19T14:20:24.179Z",
        "dateUpdated": "2026-08-05T11:27:25.924Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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