{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-07T18:46:44.852","vulnerabilities":[{"cve":{"id":"CVE-2021-47284","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-21T15:15:16.577","lastModified":"2025-04-02T14:48:11.093","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nisdn: mISDN: netjet: Fix crash in nj_probe:\n\n'nj_setup' in netjet.c might fail with -EIO and in this case\n'card->irq' is initialized and is bigger than zero. A subsequent call to\n'nj_release' will free the irq that has not been requested.\n\nFix this bug by deleting the previous assignment to 'card->irq' and just\nkeep the assignment before 'request_irq'.\n\nThe KASAN's log reveals it:\n\n[    3.354615 ] WARNING: CPU: 0 PID: 1 at kernel/irq/manage.c:1826\nfree_irq+0x100/0x480\n[    3.355112 ] Modules linked in:\n[    3.355310 ] CPU: 0 PID: 1 Comm: swapper/0 Not tainted\n5.13.0-rc1-00144-g25a1298726e #13\n[    3.355816 ] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\nrel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\n[    3.356552 ] RIP: 0010:free_irq+0x100/0x480\n[    3.356820 ] Code: 6e 08 74 6f 4d 89 f4 e8 5e ac 09 00 4d 8b 74 24 18\n4d 85 f6 75 e3 e8 4f ac 09 00 8b 75 c8 48 c7 c7 78 c1 2e 85 e8 e0 cf f5\nff <0f> 0b 48 8b 75 c0 4c 89 ff e8 72 33 0b 03 48 8b 43 40 4c 8b a0 80\n[    3.358012 ] RSP: 0000:ffffc90000017b48 EFLAGS: 00010082\n[    3.358357 ] RAX: 0000000000000000 RBX: ffff888104dc8000 RCX:\n0000000000000000\n[    3.358814 ] RDX: ffff8881003c8000 RSI: ffffffff8124a9e6 RDI:\n00000000ffffffff\n[    3.359272 ] RBP: ffffc90000017b88 R08: 0000000000000000 R09:\n0000000000000000\n[    3.359732 ] R10: ffffc900000179f0 R11: 0000000000001d04 R12:\n0000000000000000\n[    3.360195 ] R13: ffff888107dc6000 R14: ffff888107dc6928 R15:\nffff888104dc80a8\n[    3.360652 ] FS:  0000000000000000(0000) GS:ffff88817bc00000(0000)\nknlGS:0000000000000000\n[    3.361170 ] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    3.361538 ] CR2: 0000000000000000 CR3: 000000000582e000 CR4:\n00000000000006f0\n[    3.362003 ] DR0: 0000000000000000 DR1: 0000000000000000 DR2:\n0000000000000000\n[    3.362175 ] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:\n0000000000000400\n[    3.362175 ] Call Trace:\n[    3.362175 ]  nj_release+0x51/0x1e0\n[    3.362175 ]  nj_probe+0x450/0x950\n[    3.362175 ]  ? pci_device_remove+0x110/0x110\n[    3.362175 ]  local_pci_probe+0x45/0xa0\n[    3.362175 ]  pci_device_probe+0x12b/0x1d0\n[    3.362175 ]  really_probe+0x2a9/0x610\n[    3.362175 ]  driver_probe_device+0x90/0x1d0\n[    3.362175 ]  ? mutex_lock_nested+0x1b/0x20\n[    3.362175 ]  device_driver_attach+0x68/0x70\n[    3.362175 ]  __driver_attach+0x124/0x1b0\n[    3.362175 ]  ? device_driver_attach+0x70/0x70\n[    3.362175 ]  bus_for_each_dev+0xbb/0x110\n[    3.362175 ]  ? rdinit_setup+0x45/0x45\n[    3.362175 ]  driver_attach+0x27/0x30\n[    3.362175 ]  bus_add_driver+0x1eb/0x2a0\n[    3.362175 ]  driver_register+0xa9/0x180\n[    3.362175 ]  __pci_register_driver+0x82/0x90\n[    3.362175 ]  ? w6692_init+0x38/0x38\n[    3.362175 ]  nj_init+0x36/0x38\n[    3.362175 ]  do_one_initcall+0x7f/0x3d0\n[    3.362175 ]  ? rdinit_setup+0x45/0x45\n[    3.362175 ]  ? rcu_read_lock_sched_held+0x4f/0x80\n[    3.362175 ]  kernel_init_freeable+0x2aa/0x301\n[    3.362175 ]  ? rest_init+0x2c0/0x2c0\n[    3.362175 ]  kernel_init+0x18/0x190\n[    3.362175 ]  ? rest_init+0x2c0/0x2c0\n[    3.362175 ]  ? rest_init+0x2c0/0x2c0\n[    3.362175 ]  ret_from_fork+0x1f/0x30\n[    3.362175 ] Kernel panic - not syncing: panic_on_warn set ...\n[    3.362175 ] CPU: 0 PID: 1 Comm: swapper/0 Not tainted\n5.13.0-rc1-00144-g25a1298726e #13\n[    3.362175 ] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\nrel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\n[    3.362175 ] Call Trace:\n[    3.362175 ]  dump_stack+0xba/0xf5\n[    3.362175 ]  ? free_irq+0x100/0x480\n[    3.362175 ]  panic+0x15a/0x3f2\n[    3.362175 ]  ? __warn+0xf2/0x150\n[    3.362175 ]  ? free_irq+0x100/0x480\n[    3.362175 ]  __warn+0x108/0x150\n[    3.362175 ]  ? free_irq+0x100/0x480\n[    3.362175 ]  report_bug+0x119/0x1c0\n[    3.362175 ]  handle_bug+0x3b/0x80\n[    3.362175 ]  exc_invalid_op+0x18/0x70\n[    3.362175 ]  asm_exc_invalid_op+0x12/0x20\n[    3.362175 ] RIP: 0010:free_irq+0x100\n---truncated---"},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: isdn: mISDN: netjet: Soluciona fallo en nj_probe: 'nj_setup' en netjet.c puede fallar con -EIO y en este caso 'card-&gt;irq' está inicializado y es más grande que cero. Una llamada posterior a 'nj_release' liberará el irq que no ha sido solicitado. Corrija este error eliminando la asignación anterior a 'card-&gt;irq' y simplemente mantenga la asignación antes de 'request_irq'. El registro de KASAN lo revela: [3.354615] ADVERTENCIA: CPU: 0 PID: 1 en kernel/irq/manage.c:1826 free_irq+0x100/0x480 [3.355112] Módulos vinculados en: [3.355310] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc1-00144-g25a1298726e #13 [ 3.355816 ] Nombre del hardware: PC estándar QEMU (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04 /01/2014 [ 3.356552 ] RIP: 0010:free_irq+0x100/0x480 [ 3.356820 ] Código: 6e 08 74 6f 4d 89 f4 e8 5e ac 09 00 4d 8b 74 24 18 4d 85 f6 75 e3 e8 f ac 09 00 8b 75 c8 48 c7 c7 78 c1 2e 85 e8 e0 cf f5 ff &lt;0f&gt; 0b 48 8b 75 c0 4c 89 ff e8 72 33 0b 03 48 8b 43 40 4c 8b a0 80 [ 3.358012 ] RSP: 17b48 EFLAGS: 00010082 [ 3.358357 ] RAX: 0000000000000000 RBX: ffff888104dc8000 RCX: 0000000000000000 [ 3.358814 ] RDX: ffff8881003c8000 RSI: ffffffff8124a9e6 RDI: 00000000ffffff ff [ 3.359272 ] RBP: ffffc90000017b88 R08: 0000000000000000 R09: 0000000000000000 [ 3.359732 ] R10: ffffc900000179f0 R11: 0000000000001d0 4 R12: 0000000000000000 [ 3.360195 ] R13 : ffff888107dc6000 R14: ffff888107dc6928 R15: ffff888104dc80a8 [ 3.360652 ] FS: 0000000000000000(0000) GS:ffff88817bc00000(0000) 00000000000 [ 3.361170 ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.361538 ] CR2: 00000000000000000 CR3: 000000000582e000 CR4: 00000000000006f0 [ 3.362003 ] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 3.362175 ] DR3: 000000000000000 0 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 3.362175 ] Seguimiento de llamadas: [ 3.362175 ] nj_release+0x51/0x1e0 [ 3.362175 ] nj_probe+0x450/0x950 [ 3,362175 ] ? pci_device_remove+0x110/0x110 [ 3.362175 ] local_pci_probe+0x45/0xa0 [ 3.362175 ] pci_device_probe+0x12b/0x1d0 [ 3.362175 ] really_probe+0x2a9/0x610 [ 3.362175 ]driver_probe_device+0x90/0x1d0 [3.362175]? mutex_lock_nested+0x1b/0x20 [3.362175] device_driver_attach+0x68/0x70 [3.362175] __driver_attach+0x124/0x1b0 [3.362175]? device_driver_attach+0x70/0x70 [3.362175] bus_for_each_dev+0xbb/0x110 [3.362175]? rdinit_setup+0x45/0x45 [ 3.362175 ] driver_attach+0x27/0x30 [ 3.362175 ] bus_add_driver+0x1eb/0x2a0 [ 3.362175 ] driver_register+0xa9/0x180 [ 3.362175 ] x82/0x90 [3.362175]? w6692_init+0x38/0x38 [3.362175] nj_init+0x36/0x38 [3.362175] do_one_initcall+0x7f/0x3d0 [3.362175]? rdinit_setup+0x45/0x45 [3.362175]? rcu_read_lock_sched_held+0x4f/0x80 [3.362175] kernel_init_freeable+0x2aa/0x301 [3.362175]? rest_init+0x2c0/0x2c0 [3.362175] kernel_init+0x18/0x190 [3.362175]? rest_init+0x2c0/0x2c0 [3.362175]? rest_init+0x2c0/0x2c0 [3.362175] ret_from_fork+0x1f/0x30 [3.362175] Pánico del kernel - no sincronizado:  panic_on_warn establecido... [3.362175] CPU: 0 PID: 1 Comm: swapper/0 No contaminado 5.13.0-rc1-00144 -g25a1298726e #13 [ 3.362175 ] Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 01/04/2014 [ 3.362175 ] Seguimiento de llamadas: [ 3.362175 ] dump_stack+0xba/0xf5 [3.362175]? free_irq+0x100/0x480 [3.362175] pánico+0x15a/0x3f2 [3.362175]? __advertir+0xf2/0x150 [3.362175]? free_irq+0x100/0x480 [3.362175] __warn+0x108/0x150 [3.362175]? free_irq+0x100/0x480 [ 3.362175 ] report_bug+0x119/0x1c0 [ 3.362175 ] handle_bug+0x3b/0x80 [ 3.362175 ] exc_invalid_op+0x18/0x70 [ 3.362175 ] x12/0x20 [3.362175] RIP: 0010:free_irq+0x100 --- truncado---"}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.0,"impactScore":3.6}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-400"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.4.273","matchCriteriaId":"2A209A4F-1F96-4D92-BCA6-A12D00C4404B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.5","versionEndExcluding":"4.9.273","matchCriteriaId":"484D222B-5082-4E28-BF0F-B52766353015"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.237","matchCriteriaId":"83CDDAD5-5539-46C9-9255-C1DAC38F7905"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.195","matchCriteriaId":"23EECCE9-4D4C-4684-AB00-10C938F5DDC1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.126","matchCriteriaId":"876275F9-BEC7-40E8-9D7F-A20729A4A4FF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.44","matchCriteriaId":"DA547B08-9D25-467B-AD0D-8460FE4EE70D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.12.11","matchCriteriaId":"F914A757-FAFD-407E-9031-21F66635D5EA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*","matchCriteriaId":"0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*","matchCriteriaId":"96AC23B2-D46A-49D9-8203-8E1BEDCA8532"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*","matchCriteriaId":"DA610E30-717C-4700-9F77-A3C9244F3BFD"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/143fc7220961220eecc04669e5909af8847bf8c8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4c1fcb6ec964b44edbf84235134582a5ffae1521","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6249193e03709ea625e10706ecaf17fea0427d3d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/958cb1078ca60d214826fd90a0961a447fade59a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9d7d4649dc1c53acf76df260fd519db698ed20d7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9f6f852550d0e1b7735651228116ae9d300f69b3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a0a37e4454ca1c0b424edc2c9c2487c2c46a1be6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bf78e25bd3f487208e042c67c8a31706c2dba265","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/143fc7220961220eecc04669e5909af8847bf8c8","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4c1fcb6ec964b44edbf84235134582a5ffae1521","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6249193e03709ea625e10706ecaf17fea0427d3d","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/958cb1078ca60d214826fd90a0961a447fade59a","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9d7d4649dc1c53acf76df260fd519db698ed20d7","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/9f6f852550d0e1b7735651228116ae9d300f69b3","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a0a37e4454ca1c0b424edc2c9c2487c2c46a1be6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bf78e25bd3f487208e042c67c8a31706c2dba265","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}