fkie_cve-2022-49753
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-04-01 15:41
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: dmaengine: Fix double increment of client_count in dma_chan_get() The first time dma_chan_get() is called for a channel the channel client_count is incorrectly incremented twice for public channels, first in balance_ref_count(), and again prior to returning. This results in an incorrect client count which will lead to the channel resources not being freed when they should be. A simple test of repeated module load and unload of async_tx on a Dell Power Edge R7425 also shows this resulting in a kref underflow warning. [ 124.329662] async_tx: api initialized (async) [ 129.000627] async_tx: api initialized (async) [ 130.047839] ------------[ cut here ]------------ [ 130.052472] refcount_t: underflow; use-after-free. [ 130.057279] WARNING: CPU: 3 PID: 19364 at lib/refcount.c:28 refcount_warn_saturate+0xba/0x110 [ 130.065811] Modules linked in: async_tx(-) rfkill intel_rapl_msr intel_rapl_common amd64_edac edac_mce_amd ipmi_ssif kvm_amd dcdbas kvm mgag200 drm_shmem_helper acpi_ipmi irqbypass drm_kms_helper ipmi_si syscopyarea sysfillrect rapl pcspkr ipmi_devintf sysimgblt fb_sys_fops k10temp i2c_piix4 ipmi_msghandler acpi_power_meter acpi_cpufreq vfat fat drm fuse xfs libcrc32c sd_mod t10_pi sg ahci crct10dif_pclmul libahci crc32_pclmul crc32c_intel ghash_clmulni_intel igb megaraid_sas i40e libata i2c_algo_bit ccp sp5100_tco dca dm_mirror dm_region_hash dm_log dm_mod [last unloaded: async_tx] [ 130.117361] CPU: 3 PID: 19364 Comm: modprobe Kdump: loaded Not tainted 5.14.0-185.el9.x86_64 #1 [ 130.126091] Hardware name: Dell Inc. PowerEdge R7425/02MJ3T, BIOS 1.18.0 01/17/2022 [ 130.133806] RIP: 0010:refcount_warn_saturate+0xba/0x110 [ 130.139041] Code: 01 01 e8 6d bd 55 00 0f 0b e9 72 9d 8a 00 80 3d 26 18 9c 01 00 75 85 48 c7 c7 f8 a3 03 9d c6 05 16 18 9c 01 01 e8 4a bd 55 00 <0f> 0b e9 4f 9d 8a 00 80 3d 01 18 9c 01 00 0f 85 5e ff ff ff 48 c7 [ 130.157807] RSP: 0018:ffffbf98898afe68 EFLAGS: 00010286 [ 130.163036] RAX: 0000000000000000 RBX: ffff9da06028e598 RCX: 0000000000000000 [ 130.170172] RDX: ffff9daf9de26480 RSI: ffff9daf9de198a0 RDI: ffff9daf9de198a0 [ 130.177316] RBP: ffff9da7cddf3970 R08: 0000000000000000 R09: 00000000ffff7fff [ 130.184459] R10: ffffbf98898afd00 R11: ffffffff9d9e8c28 R12: ffff9da7cddf1970 [ 130.191596] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 130.198739] FS: 00007f646435c740(0000) GS:ffff9daf9de00000(0000) knlGS:0000000000000000 [ 130.206832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 130.212586] CR2: 00007f6463b214f0 CR3: 00000008ab98c000 CR4: 00000000003506e0 [ 130.219729] Call Trace: [ 130.222192] <TASK> [ 130.224305] dma_chan_put+0x10d/0x110 [ 130.227988] dmaengine_put+0x7a/0xa0 [ 130.231575] __do_sys_delete_module.constprop.0+0x178/0x280 [ 130.237157] ? syscall_trace_enter.constprop.0+0x145/0x1d0 [ 130.242652] do_syscall_64+0x5c/0x90 [ 130.246240] ? exc_page_fault+0x62/0x150 [ 130.250178] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 130.255243] RIP: 0033:0x7f6463a3f5ab [ 130.258830] Code: 73 01 c3 48 8b 0d 75 a8 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 45 a8 1b 00 f7 d8 64 89 01 48 [ 130.277591] RSP: 002b:00007fff22f972c8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 130.285164] RAX: ffffffffffffffda RBX: 000055b6786edd40 RCX: 00007f6463a3f5ab [ 130.292303] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055b6786edda8 [ 130.299443] RBP: 000055b6786edd40 R08: 0000000000000000 R09: 0000000000000000 [ 130.306584] R10: 00007f6463b9eac0 R11: 0000000000000206 R12: 000055b6786edda8 [ 130.313731] R13: 0000000000000000 R14: 000055b6786edda8 R15: 00007fff22f995f8 [ 130.320875] </TASK> [ 130.323081] ---[ end trace eff7156d56b5cf25 ]--- cat /sys/class/dma/dma0chan*/in_use would get the wrong result. 2 2 2 Test-by: Jie Hai <haijie1@huawei.com>
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/142d644fd2cc059ffa042fbfb68e766433ef3afdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18dd3b30d4c7e8440c63118c7a7b687372b9567fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b409e14b4b7af034e0450f95c165b6c5c87dbc1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42ecd72f02cd657b00b559621e7ef7d2c4d3e5f1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71c601965532c38030133535f7cd93c1efa75af1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c6221afe573413fd2981e291f7df4a58283e0654Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3dc1b3b4750851a94212dba249703dd0e50bb20Patch
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 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2
linux linux_kernel 6.2


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: Fix double increment of client_count in dma_chan_get()\n\nThe first time dma_chan_get() is called for a channel the channel\nclient_count is incorrectly incremented twice for public channels,\nfirst in balance_ref_count(), and again prior to returning. This\nresults in an incorrect client count which will lead to the\nchannel resources not being freed when they should be. A simple\n test of repeated module load and unload of async_tx on a Dell\n Power Edge R7425 also shows this resulting in a kref underflow\n warning.\n\n[  124.329662] async_tx: api initialized (async)\n[  129.000627] async_tx: api initialized (async)\n[  130.047839] ------------[ cut here ]------------\n[  130.052472] refcount_t: underflow; use-after-free.\n[  130.057279] WARNING: CPU: 3 PID: 19364 at lib/refcount.c:28\nrefcount_warn_saturate+0xba/0x110\n[  130.065811] Modules linked in: async_tx(-) rfkill intel_rapl_msr\nintel_rapl_common amd64_edac edac_mce_amd ipmi_ssif kvm_amd dcdbas kvm\nmgag200 drm_shmem_helper acpi_ipmi irqbypass drm_kms_helper ipmi_si\nsyscopyarea sysfillrect rapl pcspkr ipmi_devintf sysimgblt fb_sys_fops\nk10temp i2c_piix4 ipmi_msghandler acpi_power_meter acpi_cpufreq vfat\nfat drm fuse xfs libcrc32c sd_mod t10_pi sg ahci crct10dif_pclmul\nlibahci crc32_pclmul crc32c_intel ghash_clmulni_intel igb megaraid_sas\ni40e libata i2c_algo_bit ccp sp5100_tco dca dm_mirror dm_region_hash\ndm_log dm_mod [last unloaded: async_tx]\n[  130.117361] CPU: 3 PID: 19364 Comm: modprobe Kdump: loaded Not\ntainted 5.14.0-185.el9.x86_64 #1\n[  130.126091] Hardware name: Dell Inc. PowerEdge R7425/02MJ3T, BIOS\n1.18.0 01/17/2022\n[  130.133806] RIP: 0010:refcount_warn_saturate+0xba/0x110\n[  130.139041] Code: 01 01 e8 6d bd 55 00 0f 0b e9 72 9d 8a 00 80 3d\n26 18 9c 01 00 75 85 48 c7 c7 f8 a3 03 9d c6 05 16 18 9c 01 01 e8 4a\nbd 55 00 \u003c0f\u003e 0b e9 4f 9d 8a 00 80 3d 01 18 9c 01 00 0f 85 5e ff ff ff\n48 c7\n[  130.157807] RSP: 0018:ffffbf98898afe68 EFLAGS: 00010286\n[  130.163036] RAX: 0000000000000000 RBX: ffff9da06028e598 RCX: 0000000000000000\n[  130.170172] RDX: ffff9daf9de26480 RSI: ffff9daf9de198a0 RDI: ffff9daf9de198a0\n[  130.177316] RBP: ffff9da7cddf3970 R08: 0000000000000000 R09: 00000000ffff7fff\n[  130.184459] R10: ffffbf98898afd00 R11: ffffffff9d9e8c28 R12: ffff9da7cddf1970\n[  130.191596] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\n[  130.198739] FS:  00007f646435c740(0000) GS:ffff9daf9de00000(0000)\nknlGS:0000000000000000\n[  130.206832] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  130.212586] CR2: 00007f6463b214f0 CR3: 00000008ab98c000 CR4: 00000000003506e0\n[  130.219729] Call Trace:\n[  130.222192]  \u003cTASK\u003e\n[  130.224305]  dma_chan_put+0x10d/0x110\n[  130.227988]  dmaengine_put+0x7a/0xa0\n[  130.231575]  __do_sys_delete_module.constprop.0+0x178/0x280\n[  130.237157]  ? syscall_trace_enter.constprop.0+0x145/0x1d0\n[  130.242652]  do_syscall_64+0x5c/0x90\n[  130.246240]  ? exc_page_fault+0x62/0x150\n[  130.250178]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[  130.255243] RIP: 0033:0x7f6463a3f5ab\n[  130.258830] Code: 73 01 c3 48 8b 0d 75 a8 1b 00 f7 d8 64 89 01 48\n83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00\n00 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 45 a8 1b 00 f7 d8 64 89\n01 48\n[  130.277591] RSP: 002b:00007fff22f972c8 EFLAGS: 00000206 ORIG_RAX:\n00000000000000b0\n[  130.285164] RAX: ffffffffffffffda RBX: 000055b6786edd40 RCX: 00007f6463a3f5ab\n[  130.292303] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055b6786edda8\n[  130.299443] RBP: 000055b6786edd40 R08: 0000000000000000 R09: 0000000000000000\n[  130.306584] R10: 00007f6463b9eac0 R11: 0000000000000206 R12: 000055b6786edda8\n[  130.313731] R13: 0000000000000000 R14: 000055b6786edda8 R15: 00007fff22f995f8\n[  130.320875]  \u003c/TASK\u003e\n[  130.323081] ---[ end trace eff7156d56b5cf25 ]---\n\ncat /sys/class/dma/dma0chan*/in_use would get the wrong result.\n2\n2\n2\n\nTest-by: Jie Hai \u003chaijie1@huawei.com\u003e"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dmaengine: Correcci\u00f3n del doble incremento de client_count en dma_chan_get() La primera vez que se llama a dma_chan_get() para un canal, el canal client_count se incrementa incorrectamente dos veces para los canales p\u00fablicos, primero en balance_ref_count() y nuevamente antes de regresar. Esto da como resultado un recuento de clientes incorrecto que provocar\u00e1 que los recursos del canal no se liberen cuando deber\u00edan. Una prueba simple de carga y descarga repetida del m\u00f3dulo async_tx en un Dell Power Edge R7425 tambi\u00e9n muestra que esto da como resultado una advertencia de desbordamiento por debajo de kref. [ 124.329662] async_tx: api inicializada (async) [ 129.000627] async_tx: api inicializada (async) [ 130.047839] ------------[ cortar aqu\u00ed ]------------ [ 130.052472] refcount_t: desbordamiento; uso despu\u00e9s de la liberaci\u00f3n. [ 130.057279] ADVERTENCIA: CPU: 3 PID: 19364 en lib/refcount.c:28 refcount_warn_saturate+0xba/0x110 [ 130.065811] M\u00f3dulos vinculados: async_tx(-) rfkill intel_rapl_msr intel_rapl_common amd64_edac edac_mce_amd ipmi_ssif kvm_amd dcdbas kvm mgag200 drm_shmem_helper acpi_ipmi irqbypass drm_kms_helper ipmi_si syscopyarea sysfillrect rapl pcspkr ipmi_devintf sysimgblt fb_sys_fops k10temp i2c_piix4 ipmi_msghandler acpi_power_meter acpi_cpufreq vfat fat drm fuse xfs libcrc32c sd_mod t10_pi sg ahci crct10dif_pclmul libahci crc32_pclmul crc32c_intel ghash_clmulni_intel igb megaraid_sas i40e libata i2c_algo_bit ccp sp5100_tco dca dm_mirror dm_region_hash dm_log dm_mod [\u00faltima descarga: async_tx] [130.117361] CPU: 3 PID: 19364 Comm: modprobe Kdump: cargado No contaminado 5.14.0-185.el9.x86_64 #1 [130.126091] Nombre del hardware: Dell Inc. PowerEdge R7425/02MJ3T, BIOS 1.18.0 17/01/2022 [ 130.133806] RIP: 0010:refcount_warn_saturate+0xba/0x110 [ 130.139041] C\u00f3digo: 01 01 e8 6d bd 55 00 0f 0b e9 72 9d 8a 00 80 3d 26 18 9c 01 00 75 85 48 c7 c7 f8 a3 03 9d c6 05 16 18 9c 01 01 e8 4a bd 55 00 \u0026lt;0f\u0026gt; 0b e9 4f 9d 8a 00 80 3d 01 18 9c 01 00 0f 85 5e ff ff ff 48 c7 [ 130.157807] RSP: 0018:ffffbf98898afe68 EFLAGS: 00010286 [ 130.163036] RAX: 000000000000000 RBX: ffff9da06028e598 RCX: 0000000000000000 [ 130.170172] RDX: ffff9daf9de26480 RSI: ffff9daf9de198a0 RDI: ffff9daf9de198a0 [ 130.177316] RBP: ffff9da7cddf3970 R08: 0000000000000000 R09: 00000000ffff7fff [ 130.184459] R10: ffffbf98898afd00 R11: ffffffff9d9e8c28 R12: ffff9da7cddf1970 [ 130.191596] R13: 000000000000000 R14: 000000000000000 R15: 000000000000000 [ 130.198739] FS: 00007f646435c740(0000) GS:ffff9daf9de00000(0000) knlGS:0000000000000000 [ 130.206832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 130.212586] CR2: 00007f6463b214f0 CR3: 00000008ab98c000 CR4: 00000000003506e0 [ 130.219729] Rastreo de llamadas: [ 130.222192]  [ 130.224305] dma_chan_put+0x10d/0x110 [ 130.227988] dmaengine_put+0x7a/0xa0 [ [130.231575] __do_sys_delete_module.constprop.0+0x178/0x280 [ 130.237157] ? syscall_trace_enter.constprop.0+0x145/0x1d0 [ 130.242652] do_syscall_64+0x5c/0x90 [ 130.246240] ? exc_page_fault+0x62/0x150 [ 130.250178] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 130.255243] RIP: 0033:0x7f6463a3f5ab [ 130.258830] C\u00f3digo: 73 01 c3 48 8b 0d 75 a8 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d 45 a8 1b 00 f7 d8 64 89 01 48 [ 130.277591] RSP: 002b:00007fff22f972c8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 130.285164] RAX: ffffffffffffffda RBX: 000055b6786edd40 RCX: 00007f6463a3f5ab [ 130.292303] RDX: 000000000000000 RSI: 0000000000000800 RDI: 000055b6786edda8 [ 130.299443] RBP: 000055b6786edd40 R08: 0000000000000000 R09: 0000000000000000 [ 130.306584] R10: 00007f6463b9eac0 R11: 0000000000000206 R12: 000055b6786edda8 [ 130.313731] R13: 000000000000000 R14: 000055b6786edda8 R15: 00007fff22f995f8 [ 130.320875]  [ 130.323081] ---[ fin del seguimiento eff7156d56b5cf25 ]--- cat /sys/class/dma/dma0chan*/in_use obtendr\u00eda un resultado incorrecto. ----truncada----"
    }
  ],
  "id": "CVE-2022-49753",
  "lastModified": "2025-04-01T15:41:09.700",
  "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": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-03-27T17:15:40.227",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/142d644fd2cc059ffa042fbfb68e766433ef3afd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/18dd3b30d4c7e8440c63118c7a7b687372b9567f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/1b409e14b4b7af034e0450f95c165b6c5c87dbc1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/42ecd72f02cd657b00b559621e7ef7d2c4d3e5f1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/71c601965532c38030133535f7cd93c1efa75af1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c6221afe573413fd2981e291f7df4a58283e0654"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f3dc1b3b4750851a94212dba249703dd0e50bb20"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.