{"id":"CVE-2026-98603","revision":"5ba8fd5930914689b9cbd582ef04a563","records":[{"revision":"5ba8fd5930914689b9cbd582ef04a563","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98603","aliases":[],"title":"ovpn: replace bind when clearing stale local source","description":"In the Linux kernel, the following vulnerability has been resolved:\n\novpn: replace bind when clearing stale local source\n\nThe UDP output fallback clears bind->local in place when the remembered\nsource address is no longer usable. The bind is RCU-published and read\nlocklessly by concurrent TX, so an IPv6 reader can observe a torn\naddress.\n\nRetry the route lookup with source address autoselection without\nmodifying the bind. After a successful lookup, revalidate the bind and\nroute key under peer->lock, reset the dst cache, and best-effort publish\na replacement bind with a wildcard local address.\n\nDo not cache the resolved dst when clearing the local source. Replacing\nthe source invalidates all per-CPU cache entries, while\ndst_cache_set_ip4 and dst_cache_set_ip6 update only the current CPU\nslot. The current packet can still use the resolved route; if bind\nallocation fails, a later cache miss retries the repair.","state":0,"publishedAt":"2026-10-18T15:19:16.215+00:00","modifiedAt":"2026-10-19T09:22:30.537+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                        \"drivers/net/ovpn/udp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"08857b5ec5d91d83e69e40a36554a8c7557b7301\",\n                            \"lessThan\": \"c44a04722f7dae9a45a101b8e100931ab59f1c18\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"08857b5ec5d91d83e69e40a36554a8c7557b7301\",\n                            \"lessThan\": \"72bd1bea37ea2c8553938f086bf48ccd2147dfe1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"08857b5ec5d91d83e69e40a36554a8c7557b7301\",\n                            \"lessThan\": \"7d8104988f423572df1f3347ce578037b1043f34\",\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                        \"drivers/net/ovpn/udp.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\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/c44a04722f7dae9a45a101b8e100931ab59f1c18","https://git.kernel.org/stable/c/72bd1bea37ea2c8553938f086bf48ccd2147dfe1","https://git.kernel.org/stable/c/7d8104988f423572df1f3347ce578037b1043f34"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98603","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98603","identifiers":["CVE-2026-98603"]},"retained":false,"historicalAffected":[]}],"coverage":[]}