{"id":"CVE-2026-23459","revision":"33774d3e64dd4c3486665bfa15f2c66d","records":[{"revision":"33774d3e64dd4c3486665bfa15f2c66d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23459","aliases":[],"title":"ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS\n\nBlamed commits forgot that vxlan/geneve use udp_tunnel[6]_xmit_skb() which\ncall iptunnel_xmit_stats().\n\niptunnel_xmit_stats() was assuming tunnels were only using\nNETDEV_PCPU_STAT_TSTATS.\n\n@syncp offset in pcpu_sw_netstats and pcpu_dstats is different.\n\n32bit kernels would either have corruptions or freezes if the syncp\nsequence was overwritten.\n\nThis patch also moves pcpu_stat_type closer to dev->{t,d}stats to avoid\na potential cache line miss since iptunnel_xmit_stats() needs to read it.","state":0,"publishedAt":"2026-04-03T15:15:39.665+00:00","modifiedAt":"2026-10-21T12:39:14.669+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                        \"include/linux/netdevice.h\",\n                        \"include/net/ip_tunnels.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1db9041e91ac574f1cecc0e98e69ac35832e8088\",\n                            \"lessThan\": \"127c5e6e2d6fa8185314537c08204ec3515eae99\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cb1c1f3b7ef908408064734fb6bdaf5811b8b84c\",\n                            \"lessThan\": \"e40e2d11ced8119d3e4469ebe91264bc1cf71530\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be226352e8dc77d3313c096b2d8e7f69bf6980fc\",\n                            \"lessThan\": \"5d562153b4719234227f99c2fb529f98a6a44d15\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be226352e8dc77d3313c096b2d8e7f69bf6980fc\",\n                            \"lessThan\": \"0d087d00161f562d5047cc4009bb0c6a19daf9f1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"be226352e8dc77d3313c096b2d8e7f69bf6980fc\",\n                            \"lessThan\": \"8431c602f551549f082bbfa67f3003f2d8e3e132\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.153\",\n                            \"lessThan\": \"6.6.160\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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                        \"include/linux/netdevice.h\",\n                        \"include/net/ip_tunnels.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.10\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","score":8.2,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/127c5e6e2d6fa8185314537c08204ec3515eae99","https://git.kernel.org/stable/c/e40e2d11ced8119d3e4469ebe91264bc1cf71530","https://git.kernel.org/stable/c/5d562153b4719234227f99c2fb529f98a6a44d15","https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1","https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23459","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23459","identifiers":["CVE-2026-23459"]},"retained":false,"historicalAffected":[]}],"coverage":[]}