CVE-2026-72417
netfilter: flowtable: Validate iph->ihl in nf_flow_ip4_tunnel_proto()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: Validate iph->ihl in nf_flow_ip4_tunnel_proto() Add sanity check for iph->ihl field in nf_flow_ip4_tunnel_proto() before using it to compute the header size, avoiding out-of-bounds access with malformed IP headers. While at it, use iph->protocol instead of the hardcoded IPPROTO_IPIP constant when setting ctx->tun.proto and reference ctx->tun.hdr_size when updating ctx->offset.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
ab427db17885814069bae891834f20842f0ac3a4 < 025a41e76b51fbc7b8eaa5bacbaa9621d00e6aa7 ab427db17885814069bae891834f20842f0ac3a4 < 84460b644329e25809b4a6d9279d6359d7fd8ebc
Linux / Linux
6.19