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CVE-2023-53033 – “Netfilter VLAN Header Arithmetic Overflow Vulnerability in Linux”

The following table lists the changes that have been made to the
CVE-2023-53033 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Mar. 27, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added Reference https://git.kernel.org/stable/c/550efeff989b041f3746118c0ddd863c39ddc1aa
    Added Reference https://git.kernel.org/stable/c/696e1a48b1a1b01edad542a1ef293665864a4dd0
    Added Reference https://git.kernel.org/stable/c/76ef74d4a379faa451003621a84e3498044e7aa3
    Added Reference https://git.kernel.org/stable/c/a8acfe2c6fb99f9375a9325807a179cd8c32e6e3
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