CVE-2026-68317
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.
How to fix
- Linux Linux646b58b543f3bb1641e9123b75ff7799fe7b42f1, ef194751fed50cf3452017b63f00142a0ab40c70, cf0ed2ba202f5c3b300ec1bf7ff0b5d555f7d518, bdeab32a7a91acd295d52a2d4ab1cc3f2da5e454, bfa33cd513c7ceb93c5a4c30e5662acd73c0a916, 6.6.148, 6.12.101, 6.15 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 0861fccd43b8bafb533d97308862d20b7db3a2ad ≤ v < 646b58b543f3bb1641e9123b75ff7799fe7b42f1, f41e27b746241e57d968d1d61c008322338ca258 ≤ v < ef194751fed50cf3452017b63f00142a0ab40c70, b699bdc720c0255d1bb76cecba7382c1f2107af5 ≤ v < cf0ed2ba202f5c3b300ec1bf7ff0b5d555f7d518, b699bdc720c0255d1bb76cecba7382c1f2107af5 ≤ v < bdeab32a7a91acd295d52a2d4ab1cc3f2da5e454, b699bdc720c0255d1bb76cecba7382c1f2107af5 ≤ v < bfa33cd513c7ceb93c5a4c30e5662acd73c0a916, fec5f7af1d5f64a38f9224cd27b274d1af55a7ed, 6.6.90 ≤ v < 6.6.148, 6.12.28 ≤ v < 6.12.101, 6.14.6 ≤ v < 6.15, 6.15 | 646b58b543f3bb1641e9123b75ff7799fe7b42f1, ef194751fed50cf3452017b63f00142a0ab40c70, cf0ed2ba202f5c3b300ec1bf7ff0b5d555f7d518, bdeab32a7a91acd295d52a2d4ab1cc3f2da5e454, bfa33cd513c7ceb93c5a4c30e5662acd73c0a916, 6.6.148, 6.12.101, 6.15 |
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