CVE-2026-52942
Linux Linux, linux kernel 취약점
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_log: validate MAC header was set before dumping it The fallback path of dump_mac_header() guards the MAC header access only with "skb->mac_header != skb->network_header", without checking skb_mac_header_was_set(). When the MAC header is unset, mac_header is 0xffff, so the test passes and skb_mac_header(skb) returns skb->head + 0xffff, ~64 KiB past the buffer; the loop then reads dev->hard_header_len bytes out of bounds into the kernel log. This is reachable via the netdev logger: nf_log_unknown_packet() calls...
- 대응 우선순위
- 점검
- CVSS
- 7.1
- EPSS
- 0.13% 백분위 2.63% · 2026.07.29 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.06.24