{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-22T16:37:47.047","vulnerabilities":[{"cve":{"id":"CVE-2021-47468","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-22T07:15:11.603","lastModified":"2025-09-24T18:40:47.120","vulnStatus":"Analyzed","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->isac.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): [<0000000000000000>] 0x0\n[   44.170627 ] hardirqs last disabled at (0): [<ffffffff814209ed>] copy_process+0x132d/0x3e00\n[   44.171240 ] softirqs last  enabled at (0): [<ffffffff81420a1a>] copy_process+0x135a/0x3e00\n[   44.171852 ] softirqs last disabled at (0): [<0000000000000000>] 0x0\n[   44.172318 ] Preemption disabled at:\n[   44.172320 ] [<ffffffffa009b0a9>] 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 función de suspensión llamada desde un contexto no válido. El controlador puede llamar a la función card-&gt;isac.release() desde un contexto atómico. Solucione este problema llamando a esta función después de liberar el bloqueo. El siguiente registro lo revela: [44.168226] ERROR: función inactiva llamada desde un contexto no válido en kernel/workqueue.c:3018 [44.168941] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, nombre: modprobe [44.169574] INFORMACIÓN: lockdep está desactivado. [ 44.169899 ] sello de evento irq: 0 [ 44.170160 ] hardirqs habilitado por última vez en (0): [&lt;0000000000000000&gt;] 0x0 [ 44.170627 ] hardirqs deshabilitado por última vez en (0): [] copy_process+0x132d/0x3e00 [ 44.171240 ] softirqs habilitado por última vez en (0): [] copy_process+0x135a/0x3e00 [ 44.171852 ] softirqs deshabilitado por última vez en (0): [&lt;00000000000000000&gt;] 0x0 [ 44.172318 ] Preferencia deshabilitada en: [ 44.172320 ] ffa009b0a9&gt;] 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":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-667"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.4.290","matchCriteriaId":"C56A8089-600C-4D13-B0BD-0B3B87CAAAEC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"4.9.288","matchCriteriaId":"F99C0BFE-2803-4525-BA2B-EA4F42F8CADE"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.253","matchCriteriaId":"1830428A-CB40-4E7F-A4F9-177A0B9614D2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.214","matchCriteriaId":"8491C8F9-93D0-4314-BD59-65E3038494EA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.156","matchCriteriaId":"03015A9C-56AA-4210-9491-CF2FB0F45B9A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.76","matchCriteriaId":"E61528CE-9083-425B-AE36-3791232BF780"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.14.15","matchCriteriaId":"63BD46C4-473F-45F9-93E9-F67D955321D8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*","matchCriteriaId":"E46C74C6-B76B-4C94-A6A4-FD2FFF62D644"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*","matchCriteriaId":"60134C3A-06E4-48C1-B04F-2903732A4E56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*","matchCriteriaId":"0460DA88-8FE1-46A2-9DDA-1F1ABA552E71"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*","matchCriteriaId":"AF55383D-4DF2-45DC-93F7-571F4F978EAB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*","matchCriteriaId":"9E9481B2-8AA6-4CBD-B5D3-C10F51FF6D01"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f596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