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vuln-cve/data/2026/31xxx/CVE-2026-31546.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-31546",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-03-09T15:48:24.114Z",
"datePublished": "2026-04-24T14:33:14.572Z",
"dateUpdated": "2026-11-10T12:44:55.976Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T22:10:52.103Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bonding: fix NULL deref in bond_debug_rlb_hash_show\n\nrlb_clear_slave intentionally keeps RLB hash-table entries on\nthe rx_hashtbl_used_head list with slave set to NULL when no\nreplacement slave is available. However, bond_debug_rlb_hash_show\nvisites client_info->slave without checking if it's NULL.\n\nOther used-list iterators in bond_alb.c already handle this NULL-slave\nstate safely:\n\n- rlb_update_client returns early on !client_info->slave\n- rlb_req_update_slave_clients, rlb_clear_slave, and rlb_rebalance\ncompare slave values before visiting\n- lb_req_update_subnet_clients continues if slave is NULL\n\nThe following NULL deref crash can be trigger in\nbond_debug_rlb_hash_show:\n\n[ 1.289791] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[ 1.292058] RIP: 0010:bond_debug_rlb_hash_show (drivers/net/bonding/bond_debugfs.c:41)\n[ 1.293101] RSP: 0018:ffffc900004a7d00 EFLAGS: 00010286\n[ 1.293333] RAX: 0000000000000000 RBX: ffff888102b48200 RCX: ffff888102b48204\n[ 1.293631] RDX: ffff888102b48200 RSI: ffffffff839daad5 RDI: ffff888102815078\n[ 1.293924] RBP: ffff888102815078 R08: ffff888102b4820e R09: 0000000000000000\n[ 1.294267] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888100f929c0\n[ 1.294564] R13: ffff888100f92a00 R14: 0000000000000001 R15: ffffc900004a7ed8\n[ 1.294864] FS: 0000000001395380(0000) GS:ffff888196e75000(0000) knlGS:0000000000000000\n[ 1.295239] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 1.295480] CR2: 0000000000000000 CR3: 0000000102adc004 CR4: 0000000000772ef0\n[ 1.295897] Call Trace:\n[ 1.296134] seq_read_iter (fs/seq_file.c:231)\n[ 1.296341] seq_read (fs/seq_file.c:164)\n[ 1.296493] full_proxy_read (fs/debugfs/file.c:378 (discriminator 1))\n[ 1.296658] vfs_read (fs/read_write.c:572)\n[ 1.296981] ksys_read (fs/read_write.c:717)\n[ 1.297132] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))\n[ 1.297325] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nAdd a NULL check and print \"(none)\" for entries with no assigned slave."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/bonding/bond_debugfs.c"
],
"versions": [
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "19f0fd87df0e5746b24f5caa465a66a8c6e6e241",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "edacf1613f7b26423ebfa8b2892e7453c4235354",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "2ec2c777f357a83c3d503d8d9370c90b60f0ae63",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "0a3f8cd3f370247ded14d38d216b49dd30eade76",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "6a3bb74e25d79cbb15f67ef80f71e2b2bfe27ff4",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "017d674cf6930e9586a29ee808c7ca09d1396d07",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "ec9762f0df2f9fbe3f40a3bfa8aab8b2f721466c",
"status": "affected",
"versionType": "git"
},
{
"version": "caafa84251b886feb6cdf23d50e2cc99dcdaaaf3",
"lessThan": "605b52497bf89b3b154674deb135da98f916e390",
"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/bonding/bond_debugfs.c"
],
"versions": [
{
"version": "2.6.38",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.38",
"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": "6.12.78",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.20",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.19.10",
"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": "2.6.38",
"versionEndExcluding": "5.10.253"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "5.15.203"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "6.1.167"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "6.6.130"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "6.12.78"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "6.18.20"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "6.19.10"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.38",
"versionEndExcluding": "7.0"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/19f0fd87df0e5746b24f5caa465a66a8c6e6e241"
},
{
"url": "https://git.kernel.org/stable/c/edacf1613f7b26423ebfa8b2892e7453c4235354"
},
{
"url": "https://git.kernel.org/stable/c/2ec2c777f357a83c3d503d8d9370c90b60f0ae63"
},
{
"url": "https://git.kernel.org/stable/c/0a3f8cd3f370247ded14d38d216b49dd30eade76"
},
{
"url": "https://git.kernel.org/stable/c/6a3bb74e25d79cbb15f67ef80f71e2b2bfe27ff4"
},
{
"url": "https://git.kernel.org/stable/c/017d674cf6930e9586a29ee808c7ca09d1396d07"
},
{
"url": "https://git.kernel.org/stable/c/ec9762f0df2f9fbe3f40a3bfa8aab8b2f721466c"
},
{
"url": "https://git.kernel.org/stable/c/605b52497bf89b3b154674deb135da98f916e390"
}
],
"title": "net: bonding: fix NULL deref in bond_debug_rlb_hash_show",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-11-10T12:44:55.976Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
"versions": [
{
"status": "affected",
"version": "V3.1.6",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
"versions": [
{
"status": "affected",
"version": "V3.1.5",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)",
"versions": [
{
"status": "affected",
"version": "V3.1.7",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)",
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"status": "affected",
"version": "V3.1.6",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)",
"versions": [
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"version": "V3.1.5",
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}
],
"defaultStatus": "unknown"
},
{
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"versions": [
{
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"version": "V3.1.7",
"lessThan": "*",
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}
],
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},
{
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],
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{
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],
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"lessThan": "*",
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}
],
"defaultStatus": "unknown"
},
{
"vendor": "Siemens",
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],
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}
],
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{
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"versions": [
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],
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},
{
"vendor": "Siemens",
"product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)",
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"lessThan": "*",
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}
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{
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],
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{
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"version": "V3.1.7",
"lessThan": "*",
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}
],
"defaultStatus": "unknown"
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
}
]
},
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-31546",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-05T21:38:27.031828Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-05T21:45:07.401Z"
}
}
]
}
}
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