cve-2023-0179 #215
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cve-2023-0179 #215
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…er 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. Reported-by: Davide Ornaghi <[email protected]> Fixes: f6ae9f1 ("netfilter: nft_payload: add C-VLAN support") Signed-off-by: Pablo Neira Ayuso <[email protected]>
jackpot51
approved these changes
Jan 17, 2023
n3m0-22
approved these changes
Jan 17, 2023
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Testing (not including 150 suspend/resume running now) has passed on |
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@pop-os/quality-assurance @pop-os/engineering
https://www.securitynewspaper.com/2023/01/16/a-new-privilege-escalation-vulnerability-in-the-linux-kernel-enables-a-local-attacker-to-execute-malware-on-vulnerable-systems/
Please review immediatly