CVE-2026-68318 (GCVE-0-2026-68318)
Vulnerability from cvelistv5
Published
2026-08-10 12:02
Modified
2026-08-17 05:03
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
pds_core: fix use-after-free on workqueue during remove
In pdsc_remove(), the workqueue is destroyed before pdsc_teardown()
is called. This ordering allows two paths to queue work on the
destroyed workqueue:
1. If pdsc_teardown() -> pdsc_devcmd_reset() times out, the error
path in pdsc_devcmd_locked() queues health_work.
2. A NotifyQ event can trigger the ISR and queue work before free_irq()
is called in pdsc_teardown().
Fix by moving destroy_workqueue() after pdsc_teardown() so the
workqueue outlives every queuer; destroy_workqueue() then flushes any
work still pending.
Draining the queued work also requires ordering the teardown so the
resources that work touches are freed last:
- In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync()
the queue's work and only then clear qcq->intx, so
pdsc_process_adminq()'s read of qcq->intx for interrupt-credit
return cannot race with the clear.
- Free adminqcq before notifyqcq: the shared adminq ISR is released
when adminqcq is freed, and the adminq work accesses notifyqcq, so
both must be stopped before notifyqcq is freed.
References
| URL | Tags | |
|---|---|---|
Impacted products
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"drivers/net/ethernet/amd/pds_core/core.c",
"drivers/net/ethernet/amd/pds_core/main.c"
],
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"versions": [
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"version": "0",
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"version": "6.12.101",
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{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: fix use-after-free on workqueue during remove\n\nIn pdsc_remove(), the workqueue is destroyed before pdsc_teardown()\nis called. This ordering allows two paths to queue work on the\ndestroyed workqueue:\n\n1. If pdsc_teardown() -\u003e pdsc_devcmd_reset() times out, the error\n path in pdsc_devcmd_locked() queues health_work.\n\n2. A NotifyQ event can trigger the ISR and queue work before free_irq()\n is called in pdsc_teardown().\n\nFix by moving destroy_workqueue() after pdsc_teardown() so the\nworkqueue outlives every queuer; destroy_workqueue() then flushes any\nwork still pending.\n\nDraining the queued work also requires ordering the teardown so the\nresources that work touches are freed last:\n\n - In pdsc_qcq_free(), after freeing the interrupt, cancel_work_sync()\n the queue\u0027s work and only then clear qcq-\u003eintx, so\n pdsc_process_adminq()\u0027s read of qcq-\u003eintx for interrupt-credit\n return cannot race with the clear.\n\n - Free adminqcq before notifyqcq: the shared adminq ISR is released\n when adminqcq is freed, and the adminq work accesses notifyqcq, so\n both must be stopped before notifyqcq is freed."
}
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"providerMetadata": {
"dateUpdated": "2026-08-17T05:03:15.551Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/224214eb4182ff20a665b615a90b66017539dd75"
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{
"url": "https://git.kernel.org/stable/c/9e0f80fac50ab95dd75537c8ecaf5051d01f19b5"
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{
"url": "https://git.kernel.org/stable/c/ecc7a7d7569ec1d6a61e18372696b9de97635156"
},
{
"url": "https://git.kernel.org/stable/c/0ad134881508c36b65c1a8864f8bec53adbd3327"
}
],
"title": "pds_core: fix use-after-free on workqueue during remove",
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"cveId": "CVE-2026-68318",
"datePublished": "2026-08-10T12:02:53.197Z",
"dateReserved": "2026-07-30T09:28:09.382Z",
"dateUpdated": "2026-08-17T05:03:15.551Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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