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vuln-cve/data/2026/23xxx/CVE-2026-23011.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-23011",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-01-13T15:37:45.939Z",
"datePublished": "2026-01-25T14:36:24.455Z",
"dateUpdated": "2026-11-10T12:41:19.368Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:58:16.754Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: ip_gre: make ipgre_header() robust\n\nAnalog to commit db5b4e39c4e6 (\"ip6_gre: make ip6gre_header() robust\")\n\nOver the years, syzbot found many ways to crash the kernel\nin ipgre_header() [1].\n\nThis involves team or bonding drivers ability to dynamically\nchange their dev->needed_headroom and/or dev->hard_header_len\n\nIn this particular crash mld_newpack() allocated an skb\nwith a too small reserve/headroom, and by the time mld_sendpack()\nwas called, syzbot managed to attach an ipgre device.\n\n[1]\nskbuff: skb_under_panic: text:ffffffff89ea3cb7 len:2030915468 put:2030915372 head:ffff888058b43000 data:ffff887fdfa6e194 tail:0x120 end:0x6c0 dev:team0\n kernel BUG at net/core/skbuff.c:213 !\nOops: invalid opcode: 0000 [#1] SMP KASAN PTI\nCPU: 1 UID: 0 PID: 1322 Comm: kworker/1:9 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025\nWorkqueue: mld mld_ifc_work\n RIP: 0010:skb_panic+0x157/0x160 net/core/skbuff.c:213\nCall Trace:\n <TASK>\n skb_under_panic net/core/skbuff.c:223 [inline]\n skb_push+0xc3/0xe0 net/core/skbuff.c:2641\n ipgre_header+0x67/0x290 net/ipv4/ip_gre.c:897\n dev_hard_header include/linux/netdevice.h:3436 [inline]\n neigh_connected_output+0x286/0x460 net/core/neighbour.c:1618\n NF_HOOK_COND include/linux/netfilter.h:307 [inline]\n ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247\n NF_HOOK+0x9e/0x380 include/linux/netfilter.h:318\n mld_sendpack+0x8d4/0xe60 net/ipv6/mcast.c:1855\n mld_send_cr net/ipv6/mcast.c:2154 [inline]\n mld_ifc_work+0x83e/0xd60 net/ipv6/mcast.c:2693\n process_one_work kernel/workqueue.c:3257 [inline]\n process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340\n worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421\n kthread+0x711/0x8a0 kernel/kthread.c:463\n ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246"
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/ipv4/ip_gre.c"
],
"versions": [
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "eeb9a521de40c6fadccc12fa5205e5a1b364d5a8",
"status": "affected",
"versionType": "git"
},
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "8d5b6b2d79c1c22a5b0db1187a6439dff375a022",
"status": "affected",
"versionType": "git"
},
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "2ecf0aa7cc262472a9599cc51ba02ada0897a17a",
"status": "affected",
"versionType": "git"
},
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "06fe0801396a36cab865b34f666de1d65bc5ce8e",
"status": "affected",
"versionType": "git"
},
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "aa57bfea4674e6da8104fa3a37760a6f5f255dad",
"status": "affected",
"versionType": "git"
},
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "554201ed0a8f4d32e719f42caeaeb2735a9ed6ca",
"status": "affected",
"versionType": "git"
},
{
"version": "c54419321455631079c7d6e60bc732dd0c5914c5",
"lessThan": "e67c577d89894811ce4dcd1a9ed29d8b63476667",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/ipv4/ip_gre.c"
],
"versions": [
{
"version": "3.10",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.10",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.249",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.199",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.162",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.122",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.67",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.7",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.19",
"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": "3.10",
"versionEndExcluding": "5.10.249"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
"versionEndExcluding": "5.15.199"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
"versionEndExcluding": "6.1.162"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
"versionEndExcluding": "6.6.122"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
"versionEndExcluding": "6.12.67"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
"versionEndExcluding": "6.18.7"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
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}
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],
"references": [
{
"url": "https://git.kernel.org/stable/c/eeb9a521de40c6fadccc12fa5205e5a1b364d5a8"
},
{
"url": "https://git.kernel.org/stable/c/8d5b6b2d79c1c22a5b0db1187a6439dff375a022"
},
{
"url": "https://git.kernel.org/stable/c/2ecf0aa7cc262472a9599cc51ba02ada0897a17a"
},
{
"url": "https://git.kernel.org/stable/c/06fe0801396a36cab865b34f666de1d65bc5ce8e"
},
{
"url": "https://git.kernel.org/stable/c/aa57bfea4674e6da8104fa3a37760a6f5f255dad"
},
{
"url": "https://git.kernel.org/stable/c/554201ed0a8f4d32e719f42caeaeb2735a9ed6ca"
},
{
"url": "https://git.kernel.org/stable/c/e67c577d89894811ce4dcd1a9ed29d8b63476667"
}
],
"title": "ipv4: ip_gre: make ipgre_header() robust",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-23011",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-06-10T20:40:53.431859Z"
}
}
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-119",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"
}
]
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-19T18:25:27.814Z"
}
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-11-10T12:41:19.368Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
"versions": [
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"status": "affected",
"version": "V3.1.6",
"lessThan": "*",
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}
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"defaultStatus": "unknown"
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{
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}
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]
}
}
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