ghsa-hh73-mjw2-25fw
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
isdn: mISDN: Fix sleeping function called from invalid context
The driver can call card->isac.release() function from an atomic context.
Fix this by calling this function after releasing the lock.
The following log reveals it:
[ 44.168226 ] BUG: sleeping function called from invalid context at kernel/workqueue.c:3018
[ 44.168941 ] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, name: modprobe
[ 44.169574 ] INFO: lockdep is turned off.
[ 44.169899 ] irq event stamp: 0
[ 44.170160 ] hardirqs last enabled at (0): [<0000000000000000>] 0x0
[ 44.170627 ] hardirqs last disabled at (0): [
{
"affected": [],
"aliases": [
"CVE-2021-47468"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-22T07:15:11Z",
"severity": null
},
"details": "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",
"id": "GHSA-hh73-mjw2-25fw",
"modified": "2024-05-22T09:31:45Z",
"published": "2024-05-22T09:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47468"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5e76f73c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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