{"id":"CVE-2026-98278","revision":"0bf64347b24e48278af1a44fde2ff9d6","records":[{"revision":"0bf64347b24e48278af1a44fde2ff9d6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98278","aliases":[],"title":"net: remove WARN_ON_ONCE() from the dev_fill_forward_path() loop check","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: remove WARN_ON_ONCE() from the dev_fill_forward_path() loop check\n\nipip_fill_forward_path() and ip6_tnl_fill_forward_path() look up the\nroute to the tunnel's remote endpoint and set ctx->dev to its device,\nwhich is the tunnel itself when that route resolves back to the tunnel.\ndev_fill_forward_path() then makes no progress and trips\nWARN_ON_ONCE(last_dev == ctx->dev) as soon as a flowtable tries to\noffload a flow through the tunnel. That routing loop is a configuration\nany CAP_NET_ADMIN user can set up, and ip_tunnel_xmit() and\nip6_tnl_xmit() already treat it as a tx error, so remove the warning and\njust fail the walk, as commit 008e7a7c293b (\"net: remove WARN_ON_ONCE\nwhen accessing forward path array\") did for the path stack overflow.","state":0,"publishedAt":"2026-10-06T08:45:38.346+00:00","modifiedAt":"2026-10-19T09:16:49.865+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ab427db17885814069bae891834f20842f0ac3a4\",\n                            \"lessThan\": \"d8eb177632dacda28bc6130c2105afbf5b791eb0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ab427db17885814069bae891834f20842f0ac3a4\",\n                            \"lessThan\": \"150dba2c69e93302af24a0c868eebe4871e2e107\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d8eb177632dacda28bc6130c2105afbf5b791eb0","https://git.kernel.org/stable/c/150dba2c69e93302af24a0c868eebe4871e2e107"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98278","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98278","identifiers":["CVE-2026-98278"]},"retained":false,"historicalAffected":[]}],"coverage":[]}