{"cve":"CVE-2026-23459","nvd":{"published":"2026-04-03T16:16:32.833","modified":"2026-10-21T13:18:36.850","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":[],"references":["https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1","https://git.kernel.org/stable/c/127c5e6e2d6fa8185314537c08204ec3515eae99","https://git.kernel.org/stable/c/5d562153b4719234227f99c2fb529f98a6a44d15","https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132","https://git.kernel.org/stable/c/e40e2d11ced8119d3e4469ebe91264bc1cf71530"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-23459","score":0.00484,"percentile":0.41415,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}