{ "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": "2026-07-14T12:46:28.536Z" }, "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 \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" } }, "adp": [ { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-07-14T12:46:28.536Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.5", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.5", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": 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