Vulnerability-Lookup

FKIE_CVE-2024-42253

Vulnerability from fkie_nvd - Published: 2024-08-08 09:15 - Updated: 2026-08-04 11:19

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: gpio: pca953x: fix pca953x_irq_bus_sync_unlock race Ensure that `i2c_lock' is held when setting interrupt latch and mask in pca953x_irq_bus_sync_unlock() in order to avoid races. The other (non-probe) call site pca953x_gpio_set_multiple() ensures the lock is held before calling pca953x_write_regs(). The problem occurred when a request raced against irq_bus_sync_unlock() approximately once per thousand reboots on an i.MX8MP based system. * Normal case 0-0022: write register AI|3a {03,02,00,00,01} Input latch P0 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0 0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|12 {fc,00,00,00,00} Config P3 * Race case 0-0022: write register AI|08 {ff,00,00,00,00} Output P3 0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register *** 0-0022: write register AI|12 {fc,00,00,00,00} Config P3 0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/58a5c93bd1a6e949267400080f07e57ffe05ec34	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bfc6444b57dc7186b6acc964705d7516cbaf3904	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/de7cffa53149c7b48bd1bb29b02390c9f05b7f41	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e2ecdddca80dd845df42376e4b0197fe97018ba2	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10
linux	linux_kernel	6.10

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-pca953x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "44896beae605b93f2232301befccb7ef42953198",
              "versionType": "git"
            },
            {
              "lessThan": "e2ecdddca80dd845df42376e4b0197fe97018ba2",
              "status": "affected",
              "version": "44896beae605b93f2232301befccb7ef42953198",
              "versionType": "git"
            },
            {
              "lessThan": "de7cffa53149c7b48bd1bb29b02390c9f05b7f41",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "bfc6444b57dc7186b6acc964705d7516cbaf3904",
              "status": "affected",
              "version": "44896beae605b93f2232301befccb7ef42953198",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-pca953x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BC2B5B53-6D0E-4FA7-B414-71D3FF089CAA",
              "versionEndExcluding": "6.1.101",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "972274A2-D688-4C37-BE42-689B58B4C225",
              "versionEndExcluding": "6.6.42",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "01E300B3-8B39-4A2D-8B03-4631433D3915",
              "versionEndExcluding": "6.9.11",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "2EBB4392-5FA6-4DA9-9772-8F9C750109FA",
              "vulnerable": true
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            {
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              "matchCriteriaId": "331C2F14-12C7-45D5-893D-8C52EE38EA10",
              "vulnerable": true
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: pca953x: fix pca953x_irq_bus_sync_unlock race\n\nEnsure that `i2c_lock\u0027 is held when setting interrupt latch and mask in\npca953x_irq_bus_sync_unlock() in order to avoid races.\n\nThe other (non-probe) call site pca953x_gpio_set_multiple() ensures the\nlock is held before calling pca953x_write_regs().\n\nThe problem occurred when a request raced against irq_bus_sync_unlock()\napproximately once per thousand reboots on an i.MX8MP based system.\n\n * Normal case\n\n   0-0022: write register AI|3a {03,02,00,00,01} Input latch P0\n   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0\n   0-0022: write register AI|08 {ff,00,00,00,00} Output P3\n   0-0022: write register AI|12 {fc,00,00,00,00} Config P3\n\n * Race case\n\n   0-0022: write register AI|08 {ff,00,00,00,00} Output P3\n   0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register ***\n   0-0022: write register AI|12 {fc,00,00,00,00} Config P3\n   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: gpio: pca953x: corrige la ejecuci\u00f3n pca953x_irq_bus_sync_unlock Aseg\u00farese de que se mantenga `i2c_lock\u0027 al configurar el bloqueo de interrupci\u00f3n y la m\u00e1scara en pca953x_irq_bus_sync_unlock() para evitar ejecuciones. El otro sitio de llamada (que no es de sonda) pca953x_gpio_set_multiple() garantiza que el bloqueo se mantenga antes de llamar a pca953x_write_regs(). El problema ocurri\u00f3 cuando una solicitud corri\u00f3 contra irq_bus_sync_unlock() aproximadamente una vez por cada mil reinicios en un sistema basado en i.MX8MP. * Caso normal 0-0022: escribir registro AI|3a {03,02,00,00,01} Enclavamiento de entrada P0 0-0022: escribir registro AI|49 {fc,fd,ff,ff,fe} M\u00e1scara de interrupci\u00f3n P0 0 -0022: escribir registro AI|08 {ff,00,00,00,00} Salida P3 0-0022: escribir registro AI|12 {fc,00,00,00,00} Configuraci\u00f3n P3 * Caso de ejecuci\u00f3n 0-0022: escribir registro AI|08 {ff,00,00,00,00} Salida P3 0-0022: escribir registro AI|08 {03,02,00,00,01} *** Registro incorrecto *** 0-0022: escribir registro AI|12 {fc,00,00,00,00} Config P3 0-0022: escribir registro AI|49 {fc,fd,ff,ff,fe} M\u00e1scara de interrupci\u00f3n P0"
    }
  ],
  "id": "CVE-2024-42253",
  "lastModified": "2026-08-04T11:19:42.283",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:13:09.580370Z",
          "version": "2.0.3"
        }
      }
    ]
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  "published": "2024-08-08T09:15:08.220",
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      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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    },
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    {
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2024-42253 (GCVE-0-2024-42253)

Vulnerability from cvelistv5 – Published: 2024-08-08 08:46 – Updated: 2026-08-05 11:36

Title

gpio: pca953x: fix pca953x_irq_bus_sync_unlock race

Summary

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 16:13 UTC

Assigner

Linux mitre root Scorecard

References

5 references

URL	Tags
https://git.kernel.org/stable/c/58a5c93bd1a6e9492…
https://git.kernel.org/stable/c/e2ecdddca80dd845d…
https://git.kernel.org/stable/c/de7cffa53149c7b48…
https://git.kernel.org/stable/c/bfc6444b57dc7186b…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 44896beae605b93f2232301befccb7ef42953198 , < 58a5c93bd1a6e949267400080f07e57ffe05ec34 (git) Affected: 44896beae605b93f2232301befccb7ef42953198 , < e2ecdddca80dd845df42376e4b0197fe97018ba2 (git) Affected: 44896beae605b93f2232301befccb7ef42953198 , < de7cffa53149c7b48bd1bb29b02390c9f05b7f41 (git) Affected: 44896beae605b93f2232301befccb7ef42953198 , < bfc6444b57dc7186b6acc964705d7516cbaf3904 (git)
Linux	Linux	Affected: 4.7 Unaffected: 0 , < 4.7 (semver) Unaffected: 6.1.101 , ≤ 6.1.* (semver) Unaffected: 6.6.42 , ≤ 6.6.* (semver) Unaffected: 6.9.11 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-42253",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:13:09.580370Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:34:30.290Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:02:52.505Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-pca953x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "44896beae605b93f2232301befccb7ef42953198",
              "versionType": "git"
            },
            {
              "lessThan": "e2ecdddca80dd845df42376e4b0197fe97018ba2",
              "status": "affected",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "bfc6444b57dc7186b6acc964705d7516cbaf3904",
              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/gpio/gpio-pca953x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
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              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.1.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: pca953x: fix pca953x_irq_bus_sync_unlock race\n\nEnsure that `i2c_lock\u0027 is held when setting interrupt latch and mask in\npca953x_irq_bus_sync_unlock() in order to avoid races.\n\nThe other (non-probe) call site pca953x_gpio_set_multiple() ensures the\nlock is held before calling pca953x_write_regs().\n\nThe problem occurred when a request raced against irq_bus_sync_unlock()\napproximately once per thousand reboots on an i.MX8MP based system.\n\n * Normal case\n\n   0-0022: write register AI|3a {03,02,00,00,01} Input latch P0\n   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0\n   0-0022: write register AI|08 {ff,00,00,00,00} Output P3\n   0-0022: write register AI|12 {fc,00,00,00,00} Config P3\n\n * Race case\n\n   0-0022: write register AI|08 {ff,00,00,00,00} Output P3\n   0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register ***\n   0-0022: write register AI|12 {fc,00,00,00,00} Config P3\n   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0"
        }
      ],
      "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 paths are reached only through local kernel interfaces \u2014 `/dev/gpiochipN` ioctls (`GPIO_V2_GET_LINE_IOCTL`, `GPIO_V2_LINE_SET_CONFIG_IOCTL`, `GPIO_V2_LINE_SET_VALUES_IOCTL`) or the legacy `/sys/class/gpio` attributes. No network or physical access is involved.\nAC:L - The attacker drives both sides of the race directly and without bound: one thread loops edge-detection setup/teardown to hit the unlocked `pca953x_irq_bus_sync_unlock()` writes while another loops value/bias writes that enter regmap under `i2c_lock`. The race occurred spontaneously ~1 in 1000 boots, so deliberate hammering wins it readily.\nPR:L - An open file descriptor on the GPIO chardev (or legacy sysfs GPIO attributes) is required; embedded, industrial and automotive distributions routinely grant these to a non-root `gpio` group via udev, so an ordinary unprivileged local user in the normal deployment for this driver qualifies.\nUI:N - The attacker performs every step itself via ioctls on its own file descriptors; no victim action, mount, or file open by another user is needed.\nS:U - The corruption is confined to kernel heap state and the I2C GPIO expander owned by the same kernel; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - With `.disable_locking = true`, the missing `i2c_lock` leaves the regmap register cache completely unserialized; `regcache_maple_write()`/`regcache_rbtree_write()` `kfree()`/`krealloc()` cache entries with no grace period while a concurrent walker still dereferences them, yielding a use-after-free read of kernel heap, and register reads return data from the wrong register.\nI:H - The commit documents interrupt-latch data being written into the expander\u0027s Output register, arbitrarily driving GPIO lines that gate power rails, resets and interlocks; additionally the unlocked cache path gives a use-after-free/double-free write primitive on the kernel heap.\nA:H - Concurrent unlocked mutation of the shared maple-tree/rbtree register cache with unsynchronized `kfree()` leads to double free and tree corruption \u2014 kernel oops or panic \u2014 and the expander can be left with interrupts wrongly latched or masked, wedging every GPIO consumer on the bus."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:36:05.727Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/58a5c93bd1a6e949267400080f07e57ffe05ec34"
        },
        {
          "url": "https://git.kernel.org/stable/c/e2ecdddca80dd845df42376e4b0197fe97018ba2"
        },
        {
          "url": "https://git.kernel.org/stable/c/de7cffa53149c7b48bd1bb29b02390c9f05b7f41"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfc6444b57dc7186b6acc964705d7516cbaf3904"
        }
      ],
      "title": "gpio: pca953x: fix pca953x_irq_bus_sync_unlock race",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-42253",
    "datePublished": "2024-08-08T08:46:29.284Z",
    "dateReserved": "2024-07-30T07:40:12.256Z",
    "dateUpdated": "2026-08-05T11:36:05.727Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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FKIE_CVE-2024-42253

CVE-2024-42253 (GCVE-0-2024-42253)

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