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vuln-cve/data/2026/52xxx/CVE-2026-52954.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-52954",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-06-09T07:44:35.372Z",
"datePublished": "2026-06-24T16:28:36.992Z",
"dateUpdated": "2026-10-19T19:47:09.795Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-05T12:32:04.179Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: handle rbtree insertion error in decode_choose_args()\n\nA message of type CEPH_MSG_OSD_MAP contains an OSD map that itself\ncontains a CRUSH map. The received CRUSH map may optionally contain\nchoose_args that get decoded in decode_choose_args(). In this function,\nnum_choose_arg_maps is read from the message, and a corresponding number\nof crush_choose_arg_maps gets decoded afterwards. Each\ncrush_choose_arg_map has a choose_args_index, which serves as the key\nwhen inserting it into the choose_args rbtree of the decoded crush_map.\nIf a (potentially corrupted) message contains two crush_choose_arg_maps\nwith the same index, the assertion in insert_choose_arg_map() triggers a\nkernel BUG when trying to insert the second crush_choose_arg_map.\n\nThis patch fixes the issue by switching to the non-asserting rbtree\ninsertion function and rejecting the message if the insertion fails.\n\n[ idryomov: changelog ]"
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 7.5,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable decoder processes CEPH_MSG_OSD_MAP data received over the Ceph network protocol from monitor or OSD peers.\nAC:L - An attacker controlling an accepted Ceph peer can deterministically include two choose_arg_maps with the same choose_args_index; no race or special memory state is required.\nPR:N - In the highest reasonable scenario, a malicious or compromised Ceph cluster endpoint sends the malformed map to an already connected client and needs no privileges on the victim system.\nUI:N - OSD map updates are processed asynchronously by the kernel client after the Ceph session exists; no victim action is needed to process the malicious message.\nS:U - The impact is within the same kernel security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:N - The bug triggers a BUG() assertion on duplicate rbtree insertion and does not provide an information disclosure primitive.\nI:N - The vulnerable path does not perform attacker-controlled memory corruption; it aborts via BUG() before creating an integrity-impacting primitive.\nA:H - The duplicate choose_args_index triggers a kernel BUG/oops in the Ceph client decode path, causing a high-impact denial of service."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/ceph/osdmap.c"
],
"versions": [
{
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "c7bf7864e2924fa5508ac270b0e9364bc13d5a6c",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "f47430fc1f815e87406e2d3b4e476eff1bc7fd9b",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "534ebc08df97c47d4c7596f336fa31ecbf91519c",
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{
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"status": "affected",
"versionType": "git"
},
{
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"lessThan": "4d2b37abda9536808655830d683dc491d31741a8",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "0a1265a9ab875f92b6a3ffb497404f46cf9d76a3",
"status": "affected",
"versionType": "git"
},
{
"version": "5cf9c4a9959b6273675310d14a834ef14fbca37c",
"lessThan": "d289478cfc0bcf81c7914200d6abdcb78bd04ded",
"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/ceph/osdmap.c"
],
"versions": [
{
"version": "4.13",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.13",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.258",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.209",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.175",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.141",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.91",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.33",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0.10",
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1",
"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": "4.13",
"versionEndExcluding": "5.10.258"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.13",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.13",
"versionEndExcluding": "7.0.10"
},
{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.13",
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}
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],
"references": [
{
"url": "https://git.kernel.org/stable/c/c7bf7864e2924fa5508ac270b0e9364bc13d5a6c"
},
{
"url": "https://git.kernel.org/stable/c/f47430fc1f815e87406e2d3b4e476eff1bc7fd9b"
},
{
"url": "https://git.kernel.org/stable/c/0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da"
},
{
"url": "https://git.kernel.org/stable/c/534ebc08df97c47d4c7596f336fa31ecbf91519c"
},
{
"url": "https://git.kernel.org/stable/c/80c73bd1b2b04355d1d0c29be8ccbd25a380905d"
},
{
"url": "https://git.kernel.org/stable/c/4d2b37abda9536808655830d683dc491d31741a8"
},
{
"url": "https://git.kernel.org/stable/c/0a1265a9ab875f92b6a3ffb497404f46cf9d76a3"
},
{
"url": "https://git.kernel.org/stable/c/d289478cfc0bcf81c7914200d6abdcb78bd04ded"
}
],
"title": "libceph: handle rbtree insertion error in decode_choose_args()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-52954",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-16T15:23:24.439949Z"
}
}
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation"
}
]
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-19T19:47:09.795Z"
}
}
]
}
}