CVE-2026-68317

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0861fccd43b8bafb533d97308862d20b7db3a2ad < 646b58b543f3bb1641e9123b75ff7799fe7b42f1affected
LinuxLinuxf41e27b746241e57d968d1d61c008322338ca258 < ef194751fed50cf3452017b63f00142a0ab40c70affected
LinuxLinuxb699bdc720c0255d1bb76cecba7382c1f2107af5 < cf0ed2ba202f5c3b300ec1bf7ff0b5d555f7d518affected
LinuxLinuxb699bdc720c0255d1bb76cecba7382c1f2107af5 < bdeab32a7a91acd295d52a2d4ab1cc3f2da5e454affected
LinuxLinuxb699bdc720c0255d1bb76cecba7382c1f2107af5 < bfa33cd513c7ceb93c5a4c30e5662acd73c0a916affected
LinuxLinuxfec5f7af1d5f64a38f9224cd27b274d1af55a7edaffected
LinuxLinux6.6.90 < 6.6.148affected
LinuxLinux6.12.28 < 6.12.101affected
LinuxLinux6.14.6 < 6.15affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc5 <= *unaffected

Weaknesses

References