cve-2021-47468
Vulnerability from cvelistv5
Published
2024-05-22 06:23
Modified
2024-11-04 12:06
Severity ?
Summary
isdn: mISDN: Fix sleeping function called from invalid context
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nisdn: mISDN: Fix sleeping function called from invalid context\n\nThe driver can call card-\u003eisac.release() function from an atomic\ncontext.\n\nFix this by calling this function after releasing the lock.\n\nThe following log reveals it:\n\n[   44.168226 ] BUG: sleeping function called from invalid context at kernel/workqueue.c:3018\n[   44.168941 ] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, name: modprobe\n[   44.169574 ] INFO: lockdep is turned off.\n[   44.169899 ] irq event stamp: 0\n[   44.170160 ] hardirqs last  enabled at (0): [\u003c0000000000000000\u003e] 0x0\n[   44.170627 ] hardirqs last disabled at (0): [\u003cffffffff814209ed\u003e] copy_process+0x132d/0x3e00\n[   44.171240 ] softirqs last  enabled at (0): [\u003cffffffff81420a1a\u003e] copy_process+0x135a/0x3e00\n[   44.171852 ] softirqs last disabled at (0): [\u003c0000000000000000\u003e] 0x0\n[   44.172318 ] Preemption disabled at:\n[   44.172320 ] [\u003cffffffffa009b0a9\u003e] nj_release+0x69/0x500 [netjet]\n[   44.174441 ] Call Trace:\n[   44.174630 ]  dump_stack_lvl+0xa8/0xd1\n[   44.174912 ]  dump_stack+0x15/0x17\n[   44.175166 ]  ___might_sleep+0x3a2/0x510\n[   44.175459 ]  ? nj_release+0x69/0x500 [netjet]\n[   44.175791 ]  __might_sleep+0x82/0xe0\n[   44.176063 ]  ? start_flush_work+0x20/0x7b0\n[   44.176375 ]  start_flush_work+0x33/0x7b0\n[   44.176672 ]  ? trace_irq_enable_rcuidle+0x85/0x170\n[   44.177034 ]  ? kasan_quarantine_put+0xaa/0x1f0\n[   44.177372 ]  ? kasan_quarantine_put+0xaa/0x1f0\n[   44.177711 ]  __flush_work+0x11a/0x1a0\n[   44.177991 ]  ? flush_work+0x20/0x20\n[   44.178257 ]  ? lock_release+0x13c/0x8f0\n[   44.178550 ]  ? __kasan_check_write+0x14/0x20\n[   44.178872 ]  ? do_raw_spin_lock+0x148/0x360\n[   44.179187 ]  ? read_lock_is_recursive+0x20/0x20\n[   44.179530 ]  ? __kasan_check_read+0x11/0x20\n[   44.179846 ]  ? do_raw_spin_unlock+0x55/0x900\n[   44.180168 ]  ? ____kasan_slab_free+0x116/0x140\n[   44.180505 ]  ? _raw_spin_unlock_irqrestore+0x41/0x60\n[   44.180878 ]  ? skb_queue_purge+0x1a3/0x1c0\n[   44.181189 ]  ? kfree+0x13e/0x290\n[   44.181438 ]  flush_work+0x17/0x20\n[   44.181695 ]  mISDN_freedchannel+0xe8/0x100\n[   44.182006 ]  isac_release+0x210/0x260 [mISDNipac]\n[   44.182366 ]  nj_release+0xf6/0x500 [netjet]\n[   44.182685 ]  nj_remove+0x48/0x70 [netjet]\n[   44.182989 ]  pci_device_remove+0xa9/0x250"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47468",
    "datePublished": "2024-05-22T06:23:26.982Z",
    "dateReserved": "2024-05-22T06:20:56.199Z",
    "dateUpdated": "2024-11-04T12:06:31.999Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47468\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-22T07:15:11.603\",\"lastModified\":\"2024-11-21T06:36:13.810\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nisdn: mISDN: Fix sleeping function called from invalid context\\n\\nThe driver can call card-\u003eisac.release() function from an atomic\\ncontext.\\n\\nFix this by calling this function after releasing the lock.\\n\\nThe following log reveals it:\\n\\n[   44.168226 ] BUG: sleeping function called from invalid context at kernel/workqueue.c:3018\\n[   44.168941 ] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, name: modprobe\\n[   44.169574 ] INFO: lockdep is turned off.\\n[   44.169899 ] irq event stamp: 0\\n[   44.170160 ] hardirqs last  enabled at (0): [\u003c0000000000000000\u003e] 0x0\\n[   44.170627 ] hardirqs last disabled at (0): [\u003cffffffff814209ed\u003e] copy_process+0x132d/0x3e00\\n[   44.171240 ] softirqs last  enabled at (0): [\u003cffffffff81420a1a\u003e] copy_process+0x135a/0x3e00\\n[   44.171852 ] softirqs last disabled at (0): [\u003c0000000000000000\u003e] 0x0\\n[   44.172318 ] Preemption disabled at:\\n[   44.172320 ] [\u003cffffffffa009b0a9\u003e] nj_release+0x69/0x500 [netjet]\\n[   44.174441 ] Call Trace:\\n[   44.174630 ]  dump_stack_lvl+0xa8/0xd1\\n[   44.174912 ]  dump_stack+0x15/0x17\\n[   44.175166 ]  ___might_sleep+0x3a2/0x510\\n[   44.175459 ]  ? nj_release+0x69/0x500 [netjet]\\n[   44.175791 ]  __might_sleep+0x82/0xe0\\n[   44.176063 ]  ? start_flush_work+0x20/0x7b0\\n[   44.176375 ]  start_flush_work+0x33/0x7b0\\n[   44.176672 ]  ? trace_irq_enable_rcuidle+0x85/0x170\\n[   44.177034 ]  ? kasan_quarantine_put+0xaa/0x1f0\\n[   44.177372 ]  ? kasan_quarantine_put+0xaa/0x1f0\\n[   44.177711 ]  __flush_work+0x11a/0x1a0\\n[   44.177991 ]  ? flush_work+0x20/0x20\\n[   44.178257 ]  ? lock_release+0x13c/0x8f0\\n[   44.178550 ]  ? __kasan_check_write+0x14/0x20\\n[   44.178872 ]  ? do_raw_spin_lock+0x148/0x360\\n[   44.179187 ]  ? read_lock_is_recursive+0x20/0x20\\n[   44.179530 ]  ? __kasan_check_read+0x11/0x20\\n[   44.179846 ]  ? do_raw_spin_unlock+0x55/0x900\\n[   44.180168 ]  ? ____kasan_slab_free+0x116/0x140\\n[   44.180505 ]  ? _raw_spin_unlock_irqrestore+0x41/0x60\\n[   44.180878 ]  ? skb_queue_purge+0x1a3/0x1c0\\n[   44.181189 ]  ? kfree+0x13e/0x290\\n[   44.181438 ]  flush_work+0x17/0x20\\n[   44.181695 ]  mISDN_freedchannel+0xe8/0x100\\n[   44.182006 ]  isac_release+0x210/0x260 [mISDNipac]\\n[   44.182366 ]  nj_release+0xf6/0x500 [netjet]\\n[   44.182685 ]  nj_remove+0x48/0x70 [netjet]\\n[   44.182989 ]  pci_device_remove+0xa9/0x250\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: isdn: mISDN: corrige la funci\u00f3n de suspensi\u00f3n llamada desde un contexto no v\u00e1lido. El controlador puede llamar a la funci\u00f3n card-\u0026gt;isac.release() desde un contexto at\u00f3mico. Solucione este problema llamando a esta funci\u00f3n despu\u00e9s de liberar el bloqueo. El siguiente registro lo revela: [44.168226] ERROR: funci\u00f3n inactiva llamada desde un contexto no v\u00e1lido en kernel/workqueue.c:3018 [44.168941] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, nombre: modprobe [44.169574] INFORMACI\u00d3N: lockdep est\u00e1 desactivado. [ 44.169899 ] sello de evento irq: 0 [ 44.170160 ] hardirqs habilitado por \u00faltima vez en (0): [\u0026lt;0000000000000000\u0026gt;] 0x0 [ 44.170627 ] hardirqs deshabilitado por \u00faltima vez en (0): [] copy_process+0x132d/0x3e00 [ 44.171240 ] softirqs habilitado por \u00faltima vez en (0): [] copy_process+0x135a/0x3e00 [ 44.171852 ] softirqs deshabilitado por \u00faltima vez en (0): [\u0026lt;00000000000000000\u0026gt;] 0x0 [ 44.172318 ] Preferencia deshabilitada en: [ 44.172320 ] ffa009b0a9\u0026gt;] nj_release +0x69/0x500 [netjet] [ 44.174441 ] Seguimiento de llamadas: [ 44.174630 ] dump_stack_lvl+0xa8/0xd1 [ 44.174912 ] dump_stack+0x15/0x17 [ 44.175166 ] ___might_sleep+0x3a2/0x510 [ 44.175459 ] ? nj_release+0x69/0x500 [netjet] [ 44.175791 ] __might_sleep+0x82/0xe0 [ 44.176063 ] ? start_flush_work+0x20/0x7b0 [ 44.176375 ] start_flush_work+0x33/0x7b0 [ 44.176672 ] ? trace_irq_enable_rcuidle+0x85/0x170 [44.177034]? kasan_quarantine_put+0xaa/0x1f0 [ 44.177372 ] ? kasan_quarantine_put+0xaa/0x1f0 [ 44.177711 ] __flush_work+0x11a/0x1a0 [ 44.177991 ] ? Flush_work+0x20/0x20 [44.178257]? lock_release+0x13c/0x8f0 [44.178550]? __kasan_check_write+0x14/0x20 [44.178872]? do_raw_spin_lock+0x148/0x360 [44.179187]? read_lock_is_recursive+0x20/0x20 [44.179530]? __kasan_check_read+0x11/0x20 [44.179846]? do_raw_spin_unlock+0x55/0x900 [44.180168]? ____kasan_slab_free+0x116/0x140 [44.180505]? _raw_spin_unlock_irqrestore+0x41/0x60 [44.180878]? skb_queue_purge+0x1a3/0x1c0 [44.181189]? kfree+0x13e/0x290 [ 44.181438 ] Flush_work+0x17/0x20 [ 44.181695 ] mISDN_freedchannel+0xe8/0x100 [ 44.182006 ] isac_release+0x210/0x260 [mISDNipac] [ 44.182366 nj _release+0xf6/0x500 [netjet] [ 44.182685 ] nj_remove+0x48/ 0x70 [netjet] [44.182989] pci_device_remove+0xa9/0x250\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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