CVE-2026-72417
- Source
- https://cve.org/CVERecord?id=CVE-2026-72417
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72417.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-72417
- Downstream
- Published
- 2026-08-15T05:56:37Z
- Modified
- 2026-08-18T03:56:25Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- netfilter: flowtable: Validate iph->ihl in nf_flow_ip4_tunnel_proto()
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72417.json" }- References
-
- https://git.kernel.org/stable/c/025a41e76b51fbc7b8eaa5bacbaa9621d00e6aa7
- https://git.kernel.org/stable/c/84460b644329e25809b4a6d9279d6359d7fd8ebc
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72417.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-72417
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git