FKIE_CVE-2022-49945

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2025-11-14 19:43
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (gpio-fan) Fix array out of bounds access The driver does not check if the cooling state passed to gpio_fan_set_cur_state() exceeds the maximum cooling state as stored in fan_data->num_speeds. Since the cooling state is later used as an array index in set_fan_speed(), an array out of bounds access can occur. This can be exploited by setting the state of the thermal cooling device to arbitrary values, causing for example a kernel oops when unavailable memory is accessed this way. Example kernel oops: [ 807.987276] Unable to handle kernel paging request at virtual address ffffff80d0588064 [ 807.987369] Mem abort info: [ 807.987398] ESR = 0x96000005 [ 807.987428] EC = 0x25: DABT (current EL), IL = 32 bits [ 807.987477] SET = 0, FnV = 0 [ 807.987507] EA = 0, S1PTW = 0 [ 807.987536] FSC = 0x05: level 1 translation fault [ 807.987570] Data abort info: [ 807.987763] ISV = 0, ISS = 0x00000005 [ 807.987801] CM = 0, WnR = 0 [ 807.987832] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000001165000 [ 807.987872] [ffffff80d0588064] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 807.987961] Internal error: Oops: 96000005 [#1] PREEMPT SMP [ 807.987992] Modules linked in: cmac algif_hash aes_arm64 algif_skcipher af_alg bnep hci_uart btbcm bluetooth ecdh_generic ecc 8021q garp stp llc snd_soc_hdmi_codec brcmfmac vc4 brcmutil cec drm_kms_helper snd_soc_core cfg80211 snd_compress bcm2835_codec(C) snd_pcm_dmaengine syscopyarea bcm2835_isp(C) bcm2835_v4l2(C) sysfillrect v4l2_mem2mem bcm2835_mmal_vchiq(C) raspberrypi_hwmon sysimgblt videobuf2_dma_contig videobuf2_vmalloc fb_sys_fops videobuf2_memops rfkill videobuf2_v4l2 videobuf2_common i2c_bcm2835 snd_bcm2835(C) videodev snd_pcm snd_timer snd mc vc_sm_cma(C) gpio_fan uio_pdrv_genirq uio drm fuse drm_panel_orientation_quirks backlight ip_tables x_tables ipv6 [ 807.988508] CPU: 0 PID: 1321 Comm: bash Tainted: G C 5.15.56-v8+ #1575 [ 807.988548] Hardware name: Raspberry Pi 3 Model B Rev 1.2 (DT) [ 807.988574] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 807.988608] pc : set_fan_speed.part.5+0x34/0x80 [gpio_fan] [ 807.988654] lr : gpio_fan_set_cur_state+0x34/0x50 [gpio_fan] [ 807.988691] sp : ffffffc008cf3bd0 [ 807.988710] x29: ffffffc008cf3bd0 x28: ffffff80019edac0 x27: 0000000000000000 [ 807.988762] x26: 0000000000000000 x25: 0000000000000000 x24: ffffff800747c920 [ 807.988787] x23: 000000000000000a x22: ffffff800369f000 x21: 000000001999997c [ 807.988854] x20: ffffff800369f2e8 x19: ffffff8002ae8080 x18: 0000000000000000 [ 807.988877] x17: 0000000000000000 x16: 0000000000000000 x15: 000000559e271b70 [ 807.988938] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 807.988960] x11: 0000000000000000 x10: ffffffc008cf3c20 x9 : ffffffcfb60c741c [ 807.989018] x8 : 000000000000000a x7 : 00000000ffffffc9 x6 : 0000000000000009 [ 807.989040] x5 : 000000000000002a x4 : 0000000000000000 x3 : ffffff800369f2e8 [ 807.989062] x2 : 000000000000e780 x1 : 0000000000000001 x0 : ffffff80d0588060 [ 807.989084] Call trace: [ 807.989091] set_fan_speed.part.5+0x34/0x80 [gpio_fan] [ 807.989113] gpio_fan_set_cur_state+0x34/0x50 [gpio_fan] [ 807.989199] cur_state_store+0x84/0xd0 [ 807.989221] dev_attr_store+0x20/0x38 [ 807.989262] sysfs_kf_write+0x4c/0x60 [ 807.989282] kernfs_fop_write_iter+0x130/0x1c0 [ 807.989298] new_sync_write+0x10c/0x190 [ 807.989315] vfs_write+0x254/0x378 [ 807.989362] ksys_write+0x70/0xf8 [ 807.989379] __arm64_sys_write+0x24/0x30 [ 807.989424] invoke_syscall+0x4c/0x110 [ 807.989442] el0_svc_common.constprop.3+0xfc/0x120 [ 807.989458] do_el0_svc+0x2c/0x90 [ 807.989473] el0_svc+0x24/0x60 [ 807.989544] el0t_64_sync_handler+0x90/0xb8 [ 807.989558] el0t_64_sync+0x1a0/0x1a4 [ 807.989579] Code: b9403801 f9402800 7100003f 8b35cc00 (b9400416) [ 807.989627] ---[ end t ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3263984c7acdcb0658155b05a724ed45a10de76dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ff866455e1e263a9ac1958095fd440984248e2fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/517dba798793e69b510779c3cde7224a65f3ed1dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53196e0376205ed49b75bfd0475af5e0fbd20156Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7756eb1ed124753f4d64f761fc3d84290dffcb4dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8ae6a18708f260ccdeef6ba53af7548457dc26cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e9f6972ab40a82bd7f6d36800792ba2e084474d8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f233d2be38dbbb22299192292983037f01ab363cPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (gpio-fan) Fix array out of bounds access\n\nThe driver does not check if the cooling state passed to\ngpio_fan_set_cur_state() exceeds the maximum cooling state as\nstored in fan_data-\u003enum_speeds. Since the cooling state is later\nused as an array index in set_fan_speed(), an array out of bounds\naccess can occur.\nThis can be exploited by setting the state of the thermal cooling device\nto arbitrary values, causing for example a kernel oops when unavailable\nmemory is accessed this way.\n\nExample kernel oops:\n[  807.987276] Unable to handle kernel paging request at virtual address ffffff80d0588064\n[  807.987369] Mem abort info:\n[  807.987398]   ESR = 0x96000005\n[  807.987428]   EC = 0x25: DABT (current EL), IL = 32 bits\n[  807.987477]   SET = 0, FnV = 0\n[  807.987507]   EA = 0, S1PTW = 0\n[  807.987536]   FSC = 0x05: level 1 translation fault\n[  807.987570] Data abort info:\n[  807.987763]   ISV = 0, ISS = 0x00000005\n[  807.987801]   CM = 0, WnR = 0\n[  807.987832] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000001165000\n[  807.987872] [ffffff80d0588064] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000\n[  807.987961] Internal error: Oops: 96000005 [#1] PREEMPT SMP\n[  807.987992] Modules linked in: cmac algif_hash aes_arm64 algif_skcipher af_alg bnep hci_uart btbcm bluetooth ecdh_generic ecc 8021q garp stp llc snd_soc_hdmi_codec brcmfmac vc4 brcmutil cec drm_kms_helper snd_soc_core cfg80211 snd_compress bcm2835_codec(C) snd_pcm_dmaengine syscopyarea bcm2835_isp(C) bcm2835_v4l2(C) sysfillrect v4l2_mem2mem bcm2835_mmal_vchiq(C) raspberrypi_hwmon sysimgblt videobuf2_dma_contig videobuf2_vmalloc fb_sys_fops videobuf2_memops rfkill videobuf2_v4l2 videobuf2_common i2c_bcm2835 snd_bcm2835(C) videodev snd_pcm snd_timer snd mc vc_sm_cma(C) gpio_fan uio_pdrv_genirq uio drm fuse drm_panel_orientation_quirks backlight ip_tables x_tables ipv6\n[  807.988508] CPU: 0 PID: 1321 Comm: bash Tainted: G         C        5.15.56-v8+ #1575\n[  807.988548] Hardware name: Raspberry Pi 3 Model B Rev 1.2 (DT)\n[  807.988574] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  807.988608] pc : set_fan_speed.part.5+0x34/0x80 [gpio_fan]\n[  807.988654] lr : gpio_fan_set_cur_state+0x34/0x50 [gpio_fan]\n[  807.988691] sp : ffffffc008cf3bd0\n[  807.988710] x29: ffffffc008cf3bd0 x28: ffffff80019edac0 x27: 0000000000000000\n[  807.988762] x26: 0000000000000000 x25: 0000000000000000 x24: ffffff800747c920\n[  807.988787] x23: 000000000000000a x22: ffffff800369f000 x21: 000000001999997c\n[  807.988854] x20: ffffff800369f2e8 x19: ffffff8002ae8080 x18: 0000000000000000\n[  807.988877] x17: 0000000000000000 x16: 0000000000000000 x15: 000000559e271b70\n[  807.988938] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n[  807.988960] x11: 0000000000000000 x10: ffffffc008cf3c20 x9 : ffffffcfb60c741c\n[  807.989018] x8 : 000000000000000a x7 : 00000000ffffffc9 x6 : 0000000000000009\n[  807.989040] x5 : 000000000000002a x4 : 0000000000000000 x3 : ffffff800369f2e8\n[  807.989062] x2 : 000000000000e780 x1 : 0000000000000001 x0 : ffffff80d0588060\n[  807.989084] Call trace:\n[  807.989091]  set_fan_speed.part.5+0x34/0x80 [gpio_fan]\n[  807.989113]  gpio_fan_set_cur_state+0x34/0x50 [gpio_fan]\n[  807.989199]  cur_state_store+0x84/0xd0\n[  807.989221]  dev_attr_store+0x20/0x38\n[  807.989262]  sysfs_kf_write+0x4c/0x60\n[  807.989282]  kernfs_fop_write_iter+0x130/0x1c0\n[  807.989298]  new_sync_write+0x10c/0x190\n[  807.989315]  vfs_write+0x254/0x378\n[  807.989362]  ksys_write+0x70/0xf8\n[  807.989379]  __arm64_sys_write+0x24/0x30\n[  807.989424]  invoke_syscall+0x4c/0x110\n[  807.989442]  el0_svc_common.constprop.3+0xfc/0x120\n[  807.989458]  do_el0_svc+0x2c/0x90\n[  807.989473]  el0_svc+0x24/0x60\n[  807.989544]  el0t_64_sync_handler+0x90/0xb8\n[  807.989558]  el0t_64_sync+0x1a0/0x1a4\n[  807.989579] Code: b9403801 f9402800 7100003f 8b35cc00 (b9400416)\n[  807.989627] ---[ end t\n---truncated---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hwmon: (gpio-fan) Correcci\u00f3n de acceso fuera de los l\u00edmites a una matriz. El controlador no comprueba si el estado de refrigeraci\u00f3n transferido a gpio_fan_set_cur_state() supera el estado de refrigeraci\u00f3n m\u00e1ximo almacenado en fan_data-\u0026gt;num_speeds. Dado que el estado de refrigeraci\u00f3n se utiliza posteriormente como \u00edndice de matriz en set_fan_speed(), puede producirse un acceso fuera de los l\u00edmites a una matriz. Esto se puede explotar configurando el estado del dispositivo de refrigeraci\u00f3n t\u00e9rmica con valores arbitrarios, lo que provoca, por ejemplo, un error en el kernel al acceder a memoria no disponible de esta forma. Ejemplo de error de kernel: [807.987276] No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual ffffff80d0588064 [807.987369] Informaci\u00f3n de aborto de memoria: [807.987398] ESR = 0x96000005 [807.987428] EC = 0x25: DABT (EL actual), IL = 32 bits [807.987477] SET = 0, FnV = 0 [807.987507] EA = 0, S1PTW = 0 [807.987536] FSC = 0x05: error de traducci\u00f3n de nivel 1 [807.987570] Informaci\u00f3n de aborto de datos: [ 807.987398] ESR = 0x96000005 [ 807.987428] EC = 0x25: DABT (current EL), IL = 32 bits [ 807.987477] SET = 0, FnV = 0 [ 807.987507] EA = 0, S1PTW = 0 [ 807.987536] FSC = 0x05: level 1 translation fault [ 807.987570] Data abort info: [ 807.987763] ISV = 0, ISS = 0x00000005 [ 807.987801] CM = 0, WnR = 0 [ 807.987832] swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000001165000 [ 807.987872] [ffffff80d0588064] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 807.987961] Internal error: Oops: 96000005 [#1] PREEMPT SMP [ 807.987992] Modules linked in: cmac algif_hash aes_arm64 algif_skcipher af_alg bnep hci_uart btbcm bluetooth ecdh_generic ecc 8021q garp stp llc snd_soc_hdmi_codec brcmfmac vc4 brcmutil cec drm_kms_helper snd_soc_core cfg80211 snd_compress bcm2835_codec(C) snd_pcm_dmaengine syscopyarea bcm2835_isp(C) bcm2835_v4l2(C) sysfillrect v4l2_mem2mem bcm2835_mmal_vchiq(C) raspberrypi_hwmon sysimgblt videobuf2_dma_contig videobuf2_vmalloc fb_sys_fops videobuf2_memops rfkill videobuf2_v4l2 videobuf2_common i2c_bcm2835 snd_bcm2835(C) videodev snd_pcm snd_timer snd mc vc_sm_cma(C) gpio_fan uio_pdrv_genirq uio drm fuse drm_panel_orientation_quirks backlight ip_tables x_tables ipv6 [ 807.988508] CPU: 0 PID: 1321 Comm: bash Tainted: G C 5.15.56-v8+ #1575 [ 807.988548] Hardware name: Raspberry Pi 3 Model B Rev 1.2 (DT) [ 807.988574] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 807.988608] pc : set_fan_speed.part.5+0x34/0x80 [gpio_fan] [ 807.988654] lr : gpio_fan_set_cur_state+0x34/0x50 [gpio_fan] [ 807.988691] sp : ffffffc008cf3bd0 [ 807.988710] x29: ffffffc008cf3bd0 x28: ffffff80019edac0 x27: 0000000000000000 [ 807.988762] x26: 0000000000000000 x25: 0000000000000000 x24: ffffff800747c920 [ 807.988787] x23: 000000000000000a x22: ffffff800369f000 x21: 000000001999997c [ 807.988854] x20: ffffff800369f2e8 x19: ffffff8002ae8080 x18: 0000000000000000 [ 807.988877] x17: 0000000000000000 x16: 0000000000000000 x15: 000000559e271b70 [ 807.988938] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 807.988960] x11: 0000000000000000 x10: ffffffc008cf3c20 x9 : ffffffcfb60c741c [ 807.989018] x8 : 000000000000000a x7 : 00000000ffffffc9 x6 : 0000000000000009 [ 807.989040] x5 : 000000000000002a x4 : 0000000000000000 x3 : ffffff800369f2e8 [ 807.989062] x2 : 000000000000e780 x1 : 0000000000000001 x0 : ffffff80d0588060 [ 807.989084] Call trace: [ 807.989091] set_fan_speed.part.5+0x34/0x80 [gpio_fan] [ 807.989113] gpio_fan_set_cur_state+0x34/0x50 [gpio_fan] [ 807.989199] cur_state_store+0x84/0xd0 [ 807.989221] dev_attr_store+0x20/0x38 [ 807.989262] sysfs_kf_write+0x4c/0x60 [ 807.989282] kernfs_fop_write_iter+0x130/0x1c0 [ 807.989298] new_sync_write+0x10c/0x190 [ 807.989315] vfs_write+0x254/0x378 [ 807.989362] ksys_write+0x70/0xf8 [ 807.989379] __arm64_sys_write+0x24/0x30 [ 807.989424] invoke_syscall+0x4c/0x110 [ 807.989442] ---truncado---"
    }
  ],
  "id": "CVE-2022-49945",
  "lastModified": "2025-11-14T19:43:16.807",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T11:15:21.483",
  "references": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.