CVE-2026-98792

medium

Description

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.

References

https://git.kernel.org/stable/c/a2cac45848d1cf31ed190db30f90ba8211e9a8ca

https://git.kernel.org/stable/c/7c549fb7eecd01fdba7c0d12c01da876ef8a3214

https://git.kernel.org/stable/c/4d52b72f3aa68ad0536444e36530bda75070194c

https://git.kernel.org/stable/c/4033e1a9262c57dfbfc594a591a50fcba63c531a

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103877

Details

Source: Mitre, NVD

Published: 2026-10-18

Updated: 2026-10-18

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium