CVE-2026-68317
Description
AI Translation Available
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.
https://git.kernel.org/stable/c/646b58b543f3bb1641e9123b75ff7799fe7b42f1
https://git.kernel.org/stable/c/bdeab32a7a91acd295d52a2d4ab1cc3f2da5e454
https://git.kernel.org/stable/c/bfa33cd513c7ceb93c5a4c30e5662acd73c0a916
https://git.kernel.org/stable/c/cf0ed2ba202f5c3b300ec1bf7ff0b5d555f7d518
https://git.kernel.org/stable/c/ef194751fed50cf3452017b63f00142a0ab40c70