CVE-2023-53033: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits If the offset + length goes over the ethernet + vlan header, then the length is adjusted to copy the bytes that are within the boundaries of the vlan_ethhdr scratchpad area. The remaining bytes beyond ethernet + vlan header are copied directly from the skbuff data area. Fix incorrect arithmetic operator: subtract, not add, the size of the vlan header in case of double-tagged packets to adjust the length accordingly to address CVE-2023-0179.

Affected products

• Linux Linux Kernel: from 5.5, before 5.10.164 (fixed in 5.10.164); from 5.11, before 5.15.89 (fixed in 5.15.89); from 5.16, before 6.1.7 (fixed in 6.1.7); version 6.2 only

Published 2025-03-27. Last modified 2026-08-04.