← CVE Intelligence

CVE-2023-53033

netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected f6ae9f120dada00abfb47313364c35118469455f before 550efeff989b041f3746118c0ddd863c39ddc1aa; affected f6ae9f120dada00abfb47313364c35118469455f before a8acfe2c6fb99f9375a9325807a179cd8c32e6e3; affected f6ae9f120dada00abfb47313364c35118469455f before 76ef74d4a379faa451003621a84e3498044e7aa3; affected f6ae9f120dada00abfb47313364c35118469455f before 696e1a48b1a1b01edad542a1ef293665864a4dd0
Linux / Linuxaffected 5.5; unaffected 0 before 5.5; unaffected 5.10.164 through 5.10.*; unaffected 5.15.89 through 5.15.*; unaffected 6.1.7 through 6.1.*; unaffected 6.2 through *

CWE

No CWE identifiers supplied.

References