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pds_core: fix auxiliary device add/del races

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: pds_core: fix auxiliary device add/del races Two paths add or delete the same slot (pf->vfs[vf_id].padev): a VF's pdsc_reset_done() and the PF's devlink enable_vnet/disable_vnet handler. They serialize on config_lock, but neither guards the slot under it correctly. add() registers and stores a new auxiliary device without first checking the slot, so a second add of an already-populated slot leaks the first device. del() makes that check outside config_lock, so two concurrent dels can both pass it; the first clears the slot, and the second dereferences a NULL pointer. Check and update the slot under config_lock in both paths.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.12.101, 6.18.42, 6.6.148, 7.1.6
CVEs
CVE-2026-68317
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 08:57 UTC · Revision 1

Source evidence

pds_core: fix auxiliary device add/del races

core-osv · Original source

Published 10 Aug 2026, 12:02 UTC

In the Linux kernel, the following vulnerability has been resolved: pds_core: fix auxiliary device add/del races Two paths add or delete the same slot (pf->vfs[vf_id].padev): a VF's pdsc_reset_done() and the PF's devlink enable_vnet/disable_vnet handler. They serialize on config_lock, but neither guards the slot under it correctly. add() registers and stores a new auxiliary device without first checking the slot, so a second add of an already-populated slot leaks the first device. del() makes that check outside config_lock, so two concurrent dels can both pass it; the first clears the slot, and the second dereferences a NULL pointer. Check and update the slot under config_lock in both paths.

osv:CVE-2026-68317

Kernel

Fixed versions: 6.6.148, 6.12.101, 6.18.42, 7.1.6

Complete source record
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  "url": "https://osv.dev/vulnerability/CVE-2026-68317",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pds_core: fix auxiliary device add/del races",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: pds_core: fix auxiliary device add/del races Two paths add or delete the same slot (pf->vfs[vf_id].padev): a VF's pdsc_reset_done() and the PF's devlink enable_vnet/disable_vnet handler. They serialize on config_lock, but neither guards the slot under it correctly. add() registers and stores a new auxiliary device without first checking the slot, so a second add of an already-populated slot leaks the first device. del() makes that check outside config_lock, so two concurrent dels can both pass it; the first clears the slot, and the second dereferences a NULL pointer. Check and update the slot under config_lock in both paths.",
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  "source_id": "core-osv",
  "document_id": 98328,
  "published_at": "2026-08-10T12:02:52.185+00:00"
}