CVE-2023-53033
kernel: netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 27, 2025
Updated · August 19, 2026
Description
A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nft_payload component. An incorrect arithmetic operation when processing VLAN (Virtual Local Area Network) header bits in double-tagged packets can lead to a heap-buffer-overflow. A local attacker could exploit this to cause a denial of service or potentially disclose sensitive information.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-125 · Out-of-bounds Read