GHSA-74R5-9M22-5P6R
Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31In the Linux kernel, the following vulnerability has been resolved:
ice: fix 'scheduling while atomic' on aux critical err interrupt
There's a kernel BUG splat on processing aux critical error interrupts in ice_misc_intr():
[ 2100.917085] BUG: scheduling while atomic: swapper/15/0/0x00010000 ... [ 2101.060770] Call Trace: [ 2101.063229] [ 2101.065252] dump_stack+0x41/0x60 [ 2101.068587] __schedule_bug.cold.100+0x4c/0x58 [ 2101.073060] __schedule+0x6a4/0x830 [ 2101.076570] schedule+0x35/0xa0 [ 2101.079727] schedule_preempt_disabled+0xa/0x10 [ 2101.084284] __mutex_lock.isra.7+0x310/0x420 [ 2101.088580] ? ice_misc_intr+0x201/0x2e0 [ice] [ 2101.093078] ice_send_event_to_aux+0x25/0x70 [ice] [ 2101.097921] ice_misc_intr+0x220/0x2e0 [ice] [ 2101.102232] __handle_irq_event_percpu+0x40/0x180 [ 2101.106965] handle_irq_event_percpu+0x30/0x80 [ 2101.111434] handle_irq_event+0x36/0x53 [ 2101.115292] handle_edge_irq+0x82/0x190 [ 2101.119148] handle_irq+0x1c/0x30 [ 2101.122480] do_IRQ+0x49/0xd0 [ 2101.125465] common_interrupt+0xf/0xf [ 2101.129146] ...
As Andrew correctly mentioned previously[0], the following call ladder happens:
ice_misc_intr() <- hardirq ice_send_event_to_aux() device_lock() mutex_lock() might_sleep() might_resched() <- oops
Add a new PF state bit which indicates that an aux critical error occurred and serve it in ice_service_task() in process context. The new ice_pf::oicr_err_reg is read-write in both hardirq and process contexts, but only 3 bits of non-critical data probably aren't worth explicit synchronizing (and they're even in the same byte [31:24]).
[0] https://lore.kernel.org/all/YeSRUVmrdmlUXHDn@lunn.ch
{
"affected": [],
"aliases": [
"CVE-2022-49193"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:00:56Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix \u0027scheduling while atomic\u0027 on aux critical err interrupt\n\nThere\u0027s a kernel BUG splat on processing aux critical error\ninterrupts in ice_misc_intr():\n\n[ 2100.917085] BUG: scheduling while atomic: swapper/15/0/0x00010000\n...\n[ 2101.060770] Call Trace:\n[ 2101.063229] \u003cIRQ\u003e\n[ 2101.065252] dump_stack+0x41/0x60\n[ 2101.068587] __schedule_bug.cold.100+0x4c/0x58\n[ 2101.073060] __schedule+0x6a4/0x830\n[ 2101.076570] schedule+0x35/0xa0\n[ 2101.079727] schedule_preempt_disabled+0xa/0x10\n[ 2101.084284] __mutex_lock.isra.7+0x310/0x420\n[ 2101.088580] ? ice_misc_intr+0x201/0x2e0 [ice]\n[ 2101.093078] ice_send_event_to_aux+0x25/0x70 [ice]\n[ 2101.097921] ice_misc_intr+0x220/0x2e0 [ice]\n[ 2101.102232] __handle_irq_event_percpu+0x40/0x180\n[ 2101.106965] handle_irq_event_percpu+0x30/0x80\n[ 2101.111434] handle_irq_event+0x36/0x53\n[ 2101.115292] handle_edge_irq+0x82/0x190\n[ 2101.119148] handle_irq+0x1c/0x30\n[ 2101.122480] do_IRQ+0x49/0xd0\n[ 2101.125465] common_interrupt+0xf/0xf\n[ 2101.129146] \u003c/IRQ\u003e\n...\n\nAs Andrew correctly mentioned previously[0], the following call\nladder happens:\n\nice_misc_intr() \u003c- hardirq\n ice_send_event_to_aux()\n device_lock()\n mutex_lock()\n might_sleep()\n might_resched() \u003c- oops\n\nAdd a new PF state bit which indicates that an aux critical error\noccurred and serve it in ice_service_task() in process context.\nThe new ice_pf::oicr_err_reg is read-write in both hardirq and\nprocess contexts, but only 3 bits of non-critical data probably\naren\u0027t worth explicit synchronizing (and they\u0027re even in the same\nbyte [31:24]).\n\n[0] https://lore.kernel.org/all/YeSRUVmrdmlUXHDn@lunn.ch",
"id": "GHSA-74r5-9m22-5p6r",
"modified": "2025-10-21T12:31:23Z",
"published": "2025-10-21T12:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49193"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/24d7ac8426306ae7ccea7f7dd612a7368fe7201d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/32d53c0aa3a7b727243473949bad2a830b908edc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/59e88a50afad7469c55804e46bf2924b9130281f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b77c8cf69a41d1e3851370aeaa04a9ea83b865c"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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