Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: generalize pending status bit Rename NF_FLOW_HW_PENDING to NF_FLOW_PENDING and use it to inhibit the flowtable GC worker until pending hw offload work has been completed. Apparently, nf_flow_offload_stats() can schedule work to retrieve stats while the flow is being removed by GC. And this bit can also be used in a follow up patch to disable GC until the flow has been fully added in both directions. Revert the reordering done in commit d644b23afe1e ("netfilter: flowtable: publish HW_DEAD after worker is done") to prevent a race between GC and hw offload handler.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2c8897953f3b2ff5498f3f275708a742bfcdbc24 before f7e292f3c8c853f27a1af7eaf3428a0e76fe5fcc; affected 2c8897953f3b2ff5498f3f275708a742bfcdbc24 before 4d52b72f3aa68ad0536444e36530bda75070194c; affected 2c8897953f3b2ff5498f3f275708a742bfcdbc24 before 4033e1a9262c57dfbfc594a591a50fcba63c531a; affected 2c8897953f3b2ff5498f3f275708a742bfcdbc24 before a2cac45848d1cf31ed190db30f90ba8211e9a8ca; affected 2c8897953f3b2ff5498f3f275708a742bfcdbc24 before 7c549fb7eecd01fdba7c0d12c01da876ef8a3214 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f7e292f3c8c853f27a1af7eaf3428a0e76fe5fcc
- https://git.kernel.org/stable/c/4d52b72f3aa68ad0536444e36530bda75070194c
- https://git.kernel.org/stable/c/4033e1a9262c57dfbfc594a591a50fcba63c531a
- https://git.kernel.org/stable/c/a2cac45848d1cf31ed190db30f90ba8211e9a8ca
- https://git.kernel.org/stable/c/7c549fb7eecd01fdba7c0d12c01da876ef8a3214