CVE-2026-68317: pds_core: fix auxiliary device add/del races

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-10 · updated 2026-08-17

Description

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.

Affected products

Linux kernel: from 6.6.90 before 6.6.148; from 6.12.28 before 6.12.101; from 6.14.6 before 6.15; 6.15 — fixed in 6.12.101, 6.15, 6.6.148, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.12.101, 6.15, 6.6.148, 7.2. Check the vendor advisory for mitigations.

References

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