{"api_version":"1","generated_at":"2026-04-19T01:16:18+00:00","cve":"CVE-2026-23293","urls":{"html":"https://cve.report/CVE-2026-23293","api":"https://cve.report/api/cve/CVE-2026-23293.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23293","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23293"},"summary":{"title":"net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled\n\nWhen booting with the 'ipv6.disable=1' parameter, the nd_tbl is never\ninitialized because inet6_init() exits before ndisc_init() is called\nwhich initializes it. If an IPv6 packet is injected into the interface,\nroute_shortcircuit() is called and a NULL pointer dereference happens on\nneigh_lookup().\n\n BUG: kernel NULL pointer dereference, address: 0000000000000380\n Oops: Oops: 0000 [#1] SMP NOPTI\n [...]\n RIP: 0010:neigh_lookup+0x20/0x270\n [...]\n Call Trace:\n  <TASK>\n  vxlan_xmit+0x638/0x1ef0 [vxlan]\n  dev_hard_start_xmit+0x9e/0x2e0\n  __dev_queue_xmit+0xbee/0x14e0\n  packet_sendmsg+0x116f/0x1930\n  __sys_sendto+0x1f5/0x200\n  __x64_sys_sendto+0x24/0x30\n  do_syscall_64+0x12f/0x1590\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by adding an early check on route_shortcircuit() when protocol\nis ETH_P_IPV6. Note that ipv6_mod_enabled() cannot be used here because\nVXLAN can be built-in even when IPv6 is built as a module.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-03-25 11:16:24","updated_at":"2026-04-18 09:16:17"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5f93e6b4d12bd3a4517a6d447ea675f448f21434","name":"https://git.kernel.org/stable/c/5f93e6b4d12bd3a4517a6d447ea675f448f21434","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/649e2bb74da54c96cf20729001e283626a2fefa0","name":"https://git.kernel.org/stable/c/649e2bb74da54c96cf20729001e283626a2fefa0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/168ff39e4758897d2eee4756977d036d52884c7e","name":"https://git.kernel.org/stable/c/168ff39e4758897d2eee4756977d036d52884c7e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fbbd2118982c55fb9b0a753ae0cf7194e77149fb","name":"https://git.kernel.org/stable/c/fbbd2118982c55fb9b0a753ae0cf7194e77149fb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f0373e9317bc904e7bdb123d3106fe4f3cea2fb7","name":"https://git.kernel.org/stable/c/f0373e9317bc904e7bdb123d3106fe4f3cea2fb7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc","name":"https://git.kernel.org/stable/c/dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b5190fcd75a1f1785c766a8d1e44d3938e168f45","name":"https://git.kernel.org/stable/c/b5190fcd75a1f1785c766a8d1e44d3938e168f45","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/abcd48ecdeb2e12eccb8339a35534c757782afcd","name":"https://git.kernel.org/stable/c/abcd48ecdeb2e12eccb8339a35534c757782afcd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23293","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23293","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 649e2bb74da54c96cf20729001e283626a2fefa0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 b5190fcd75a1f1785c766a8d1e44d3938e168f45 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 5f93e6b4d12bd3a4517a6d447ea675f448f21434 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 f0373e9317bc904e7bdb123d3106fe4f3cea2fb7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 fbbd2118982c55fb9b0a753ae0cf7194e77149fb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 abcd48ecdeb2e12eccb8339a35534c757782afcd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e15a00aafa4b7953ad717d3cb1ad7acf4ff76945 168ff39e4758897d2eee4756977d036d52884c7e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.253 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.77 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.17 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.7 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"23293","cve":"CVE-2026-23293","epss":"0.000320000","percentile":"0.090980000","score_date":"2026-04-18","updated_at":"2026-04-19 00:10:43"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/vxlan/vxlan_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"649e2bb74da54c96cf20729001e283626a2fefa0","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"b5190fcd75a1f1785c766a8d1e44d3938e168f45","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"5f93e6b4d12bd3a4517a6d447ea675f448f21434","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"f0373e9317bc904e7bdb123d3106fe4f3cea2fb7","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"fbbd2118982c55fb9b0a753ae0cf7194e77149fb","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"abcd48ecdeb2e12eccb8339a35534c757782afcd","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"},{"lessThan":"168ff39e4758897d2eee4756977d036d52884c7e","status":"affected","version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/vxlan/vxlan_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.12"},{"lessThan":"3.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.77","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.17","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.77","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.17","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.7","versionStartIncluding":"3.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"3.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled\n\nWhen booting with the 'ipv6.disable=1' parameter, the nd_tbl is never\ninitialized because inet6_init() exits before ndisc_init() is called\nwhich initializes it. If an IPv6 packet is injected into the interface,\nroute_shortcircuit() is called and a NULL pointer dereference happens on\nneigh_lookup().\n\n BUG: kernel NULL pointer dereference, address: 0000000000000380\n Oops: Oops: 0000 [#1] SMP NOPTI\n [...]\n RIP: 0010:neigh_lookup+0x20/0x270\n [...]\n Call Trace:\n  <TASK>\n  vxlan_xmit+0x638/0x1ef0 [vxlan]\n  dev_hard_start_xmit+0x9e/0x2e0\n  __dev_queue_xmit+0xbee/0x14e0\n  packet_sendmsg+0x116f/0x1930\n  __sys_sendto+0x1f5/0x200\n  __x64_sys_sendto+0x24/0x30\n  do_syscall_64+0x12f/0x1590\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by adding an early check on route_shortcircuit() when protocol\nis ETH_P_IPV6. Note that ipv6_mod_enabled() cannot be used here because\nVXLAN can be built-in even when IPv6 is built as a module."}],"providerMetadata":{"dateUpdated":"2026-04-18T08:57:43.516Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/649e2bb74da54c96cf20729001e283626a2fefa0"},{"url":"https://git.kernel.org/stable/c/dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc"},{"url":"https://git.kernel.org/stable/c/b5190fcd75a1f1785c766a8d1e44d3938e168f45"},{"url":"https://git.kernel.org/stable/c/5f93e6b4d12bd3a4517a6d447ea675f448f21434"},{"url":"https://git.kernel.org/stable/c/f0373e9317bc904e7bdb123d3106fe4f3cea2fb7"},{"url":"https://git.kernel.org/stable/c/fbbd2118982c55fb9b0a753ae0cf7194e77149fb"},{"url":"https://git.kernel.org/stable/c/abcd48ecdeb2e12eccb8339a35534c757782afcd"},{"url":"https://git.kernel.org/stable/c/168ff39e4758897d2eee4756977d036d52884c7e"}],"title":"net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23293","datePublished":"2026-03-25T10:26:51.160Z","dateReserved":"2026-01-13T15:37:45.993Z","dateUpdated":"2026-04-18T08:57:43.516Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-25 11:16:24","lastModifiedDate":"2026-04-18 09:16:17","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23293","Ordinal":"1","Title":"net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled","CVE":"CVE-2026-23293","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23293","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled\n\nWhen booting with the 'ipv6.disable=1' parameter, the nd_tbl is never\ninitialized because inet6_init() exits before ndisc_init() is called\nwhich initializes it. If an IPv6 packet is injected into the interface,\nroute_shortcircuit() is called and a NULL pointer dereference happens on\nneigh_lookup().\n\n BUG: kernel NULL pointer dereference, address: 0000000000000380\n Oops: Oops: 0000 [#1] SMP NOPTI\n [...]\n RIP: 0010:neigh_lookup+0x20/0x270\n [...]\n Call Trace:\n  <TASK>\n  vxlan_xmit+0x638/0x1ef0 [vxlan]\n  dev_hard_start_xmit+0x9e/0x2e0\n  __dev_queue_xmit+0xbee/0x14e0\n  packet_sendmsg+0x116f/0x1930\n  __sys_sendto+0x1f5/0x200\n  __x64_sys_sendto+0x24/0x30\n  do_syscall_64+0x12f/0x1590\n  entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nFix this by adding an early check on route_shortcircuit() when protocol\nis ETH_P_IPV6. Note that ipv6_mod_enabled() cannot be used here because\nVXLAN can be built-in even when IPv6 is built as a module.","Type":"Description","Title":"net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled"}]}}}