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vuln-cve/data/2026/23xxx/CVE-2026-23293.json
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{
"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": "2026-11-10T12:42:24.939Z"
},
"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."
}
],
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/vxlan/vxlan_core.c"
],
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"status": "affected",
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"status": "affected",
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{
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{
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{
"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",
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},
{
"version": "6.18.17",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
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},
{
"version": "6.19.7",
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
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},
{
"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,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.12",
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}
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"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": "2026-11-10T12:42:24.939Z"
},
"affected": [
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"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
"versions": [
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"version": "V3.1.6",
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}
],
"defaultStatus": "unknown"
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{
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"content": {
"id": "CVE-2026-23293",
"role": "CISA Coordinator",
"options": [
{
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},
{
"Automatable": "no"
},
{
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}
],
"version": "2.0.3",
"timestamp": "2026-11-05T21:25:26.901090Z"
}
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}
],
"title": "CISA ADP Vulnrichment",
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}
}
]
}
}
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