CVE-2026-68317: pds_core: fix auxiliary device add/del races
In the Linux kernel, the following vulnerability has been resolved:
pdscore: fix auxiliary device add/del races
Two paths add or delete the same slot (pf->vfs[vfid].padev): a VF's pdscresetdone() and the PF's devlink enablevnet/disablevnet handler. They serialize on configlock, 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 configlock, 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 configlock in both paths.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68317?
The severity of CVE-2026-68317 is rated at risk 37.
How does CVE-2026-68317 affect Linux kernel functionality?
CVE-2026-68317 affects the Linux kernel by introducing race conditions when adding or deleting auxiliary devices.
How do I fix CVE-2026-68317?
To fix CVE-2026-68317, you need to update your Linux kernel to the latest patched version.
What components are impacted by CVE-2026-68317?
CVE-2026-68317 impacts the pds_core component in the Linux kernel.
Is CVE-2026-68317 a known exploit?
As of now, there are no known exploits specific to CVE-2026-68317 publicly disclosed.