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vuln-cve/data/2021/47xxx/CVE-2021-47468.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2021-47468",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-05-22T06:20:56.199Z",
"datePublished": "2024-05-22T06:23:26.982Z",
"dateUpdated": "2026-05-11T13:55:18.400Z"
},
"containers": {
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"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T13:55:18.400Z"
},
"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"
}
],
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
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],
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