{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-23459", "tracking": { "current_release_date": "2026-04-03T16:54:50.312884Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-23459", "initial_release_date": "2026-04-03T15:40:43.579577Z", "revision_history": [ { "date": "2026-04-03T15:40:43.579577Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| Products created (2).| Products connected (4).| References created (2)." }, { "date": "2026-04-03T15:40:52.170917Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-04-03T16:49:05.521097Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (2)." } ], "status": "interim", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:git/be226352e8dc77d3313c096b2d8e7f69bf6980fc|<0d087d00161f562d5047cc4009bb0c6a19daf9f1", "product": { "name": "vers:git/be226352e8dc77d3313c096b2d8e7f69bf6980fc|<0d087d00161f562d5047cc4009bb0c6a19daf9f1", "product_id": "CSAFPID-5992406" } }, { "category": "product_version_range", "name": "vers:git/be226352e8dc77d3313c096b2d8e7f69bf6980fc|<8431c602f551549f082bbfa67f3003f2d8e3e132", "product": { "name": "vers:git/be226352e8dc77d3313c096b2d8e7f69bf6980fc|<8431c602f551549f082bbfa67f3003f2d8e3e132", "product_id": "CSAFPID-5992407" } }, { "category": "product_version_range", "name": "vers:semver/6.19.10|<=6.19.*", "product": { "name": "vers:semver/6.19.10|<=6.19.*", "product_id": "CSAFPID-5905006" } }, { "category": "product_version_range", "name": "vers:semver/<6.14", "product": { "name": "vers:semver/<6.14", "product_id": "CSAFPID-2727124" } }, { "category": "product_version_range", "name": "vers:unknown/6.14", "product": { "name": "vers:unknown/6.14", "product_id": "CSAFPID-2727123" } }, { "category": "product_version_range", "name": "vers:unknown/7.0-rc5|<=*", "product": { "name": "vers:unknown/7.0-rc5|<=*", "product_id": "CSAFPID-5905027" } } ], "category": "product_name", "name": "Linux" } ], "category": "vendor", "name": "Linux" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-23459", "notes": [ { "category": "description", "text": "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.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23459.json" }, { "category": "description", "text": "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.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23459" }, { "category": "other", "text": "4.1", "title": "NCSC Score" }, { "category": "other", "text": "The value of the most recent CVSS (V3) score, Is related to a product by vendor Linux", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-2727123", "CSAFPID-5992406", "CSAFPID-5992407" ], "known_not_affected": [ "CSAFPID-2727124", "CSAFPID-5905006", "CSAFPID-5905027" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23459.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23459" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132" } ], "title": "CVE-2026-23459" } ] }