CVE-2023-53033 - "Netfilter VLAN Header Arithmetic Overflow Vulnerability in Linux"

CVE-2023-53033 - "Netfilter VLAN Header Arithmetic Overflow Vulnerability in Linux"

https://cvefeed.io/rssfeed/latest.atom / Thu, 03/27/2025 - 21:03
CVE ID : CVE-2023-53033
Published : March 27, 2025, 5:15 p.m. | 52 minutes ago
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.
Severity: 0.0 | NA
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