{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23293","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:45.993Z","datePublished":"2026-03-25T10:26:51.160Z","dateUpdated":"2026-05-11T22:04:04.903Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:04:04.903Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/vxlan/vxlan_core.c"],"versions":[{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"649e2bb74da54c96cf20729001e283626a2fefa0","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"dc3e62cf3bbf66280a907ec379f373d0c3b8b2bc","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"b5190fcd75a1f1785c766a8d1e44d3938e168f45","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"5f93e6b4d12bd3a4517a6d447ea675f448f21434","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"f0373e9317bc904e7bdb123d3106fe4f3cea2fb7","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"fbbd2118982c55fb9b0a753ae0cf7194e77149fb","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"abcd48ecdeb2e12eccb8339a35534c757782afcd","status":"affected","versionType":"git"},{"version":"e15a00aafa4b7953ad717d3cb1ad7acf4ff76945","lessThan":"168ff39e4758897d2eee4756977d036d52884c7e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/vxlan/vxlan_core.c"],"versions":[{"version":"3.12","status":"affected"},{"version":"0","lessThan":"3.12","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.167","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.130","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.77","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.17","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.7","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.12.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12","versionEndExcluding":"7.0"}]}]}],"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"}}}}