CVE-2025-68283 (GCVE-0-2025-68283)
Vulnerability from cvelistv5 – Published: 2025-12-16 15:06 – Updated: 2026-08-05 12:10
VLAI
EPSS
VEX
Title
libceph: replace BUG_ON with bounds check for map->max_osd
Summary
In the Linux kernel, the following vulnerability has been resolved:
libceph: replace BUG_ON with bounds check for map->max_osd
OSD indexes come from untrusted network packets. Boundary checks are
added to validate these against map->max_osd.
[ idryomov: drop BUG_ON in ceph_get_primary_affinity(), minor cosmetic
edits ]
Severity
7.5 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
f24e9980eb860d8600cbe5ef3d2fd9295320d229 , < 57f5fbae9f1024aba17ff75e00433324115c548a
(git)
Affected: f24e9980eb860d8600cbe5ef3d2fd9295320d229 , < becc488a4d864db338ebd4e313aa3c77da24b604 (git) Affected: f24e9980eb860d8600cbe5ef3d2fd9295320d229 , < e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d (git) Affected: f24e9980eb860d8600cbe5ef3d2fd9295320d229 , < b4368b7f97014e1015445d61abd0b27c4c6e8424 (git) Affected: f24e9980eb860d8600cbe5ef3d2fd9295320d229 , < ec3797f043756a94ea2d0f106022e14ac4946c02 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.34
Unaffected: 0 , < 2.6.34 (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.119 , ≤ 6.6.* (semver) Unaffected: 6.12.61 , ≤ 6.12.* (semver) Unaffected: 6.17.11 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/ceph/osdmap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "57f5fbae9f1024aba17ff75e00433324115c548a",
"status": "affected",
"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
"versionType": "git"
},
{
"lessThan": "becc488a4d864db338ebd4e313aa3c77da24b604",
"status": "affected",
"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
"versionType": "git"
},
{
"lessThan": "e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d",
"status": "affected",
"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
"versionType": "git"
},
{
"lessThan": "b4368b7f97014e1015445d61abd0b27c4c6e8424",
"status": "affected",
"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
"versionType": "git"
},
{
"lessThan": "ec3797f043756a94ea2d0f106022e14ac4946c02",
"status": "affected",
"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/ceph/osdmap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.34"
},
{
"lessThan": "2.6.34",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.119",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.61",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.159",
"versionStartIncluding": "2.6.34",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.119",
"versionStartIncluding": "2.6.34",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.61",
"versionStartIncluding": "2.6.34",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.11",
"versionStartIncluding": "2.6.34",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "2.6.34",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: replace BUG_ON with bounds check for map-\u003emax_osd\n\nOSD indexes come from untrusted network packets. Boundary checks are\nadded to validate these against map-\u003emax_osd.\n\n[ idryomov: drop BUG_ON in ceph_get_primary_affinity(), minor cosmetic\n edits ]"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - An attacker-controlled Ceph monitor or OSD can deliver a crafted CEPH_MSG_OSD_MAP over TCP to an active kernel CephFS or RBD client.\nAC:L - The attacker controls both map-\u003emax_osd and the decoded OSD index, making the BUG_ON reliably reachable without a race or unpredictable condition.\nPR:N - The default legacy messenger monitor path dispatches OSD-map messages before Ceph authentication completes, so an attacker controlling the selected endpoint needs no credentials.\nUI:N - An active Ceph client automatically receives and applies map updates without any user action at exploitation time.\nS:U - The failure occurs within the host kernel and does not cross a separate security authority such as a hypervisor boundary.\nC:N - The BUG_ON executes before the invalid index is used for an out-of-bounds access, providing no information-disclosure primitive.\nI:N - The vulnerable paths terminate at BUG_ON before performing an out-of-bounds write, so the defect does not provide memory corruption or code execution.\nA:H - The crafted index triggers a kernel BUG, which can panic or reboot the host or leave the Ceph workqueue and locked subsystem unusable."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:10:36.982Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/57f5fbae9f1024aba17ff75e00433324115c548a"
},
{
"url": "https://git.kernel.org/stable/c/becc488a4d864db338ebd4e313aa3c77da24b604"
},
{
"url": "https://git.kernel.org/stable/c/e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d"
},
{
"url": "https://git.kernel.org/stable/c/b4368b7f97014e1015445d61abd0b27c4c6e8424"
},
{
"url": "https://git.kernel.org/stable/c/ec3797f043756a94ea2d0f106022e14ac4946c02"
}
],
"title": "libceph: replace BUG_ON with bounds check for map-\u003emax_osd",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68283",
"datePublished": "2025-12-16T15:06:05.355Z",
"dateReserved": "2025-12-16T14:48:05.291Z",
"dateUpdated": "2026-08-05T12:10:36.982Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2025-68283",
"date": "2026-09-17",
"epss": "0.00523",
"percentile": "0.43209"
},
"microsoft_vex": {
"current_release_date": "2026-01-07T14:39:25.000Z",
"cve": "CVE-2025-68283",
"id": "msrc_CVE-2025-68283",
"initial_release_date": "2025-12-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "libceph: replace BUG_ON with bounds check for map-\u003emax_osd",
"url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68283.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2025-68283\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T16:16:07.080\",\"lastModified\":\"2026-07-30T06:24:36.080\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibceph: replace BUG_ON with bounds check for map-\u003emax_osd\\n\\nOSD indexes come from untrusted network packets. Boundary checks are\\nadded to validate these against map-\u003emax_osd.\\n\\n[ idryomov: drop BUG_ON in ceph_get_primary_affinity(), minor cosmetic\\n edits ]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ceph/osdmap.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f24e9980eb860d8600cbe5ef3d2fd9295320d229\",\"lessThan\":\"57f5fbae9f1024aba17ff75e00433324115c548a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f24e9980eb860d8600cbe5ef3d2fd9295320d229\",\"lessThan\":\"becc488a4d864db338ebd4e313aa3c77da24b604\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f24e9980eb860d8600cbe5ef3d2fd9295320d229\",\"lessThan\":\"e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f24e9980eb860d8600cbe5ef3d2fd9295320d229\",\"lessThan\":\"b4368b7f97014e1015445d61abd0b27c4c6e8424\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f24e9980eb860d8600cbe5ef3d2fd9295320d229\",\"lessThan\":\"ec3797f043756a94ea2d0f106022e14ac4946c02\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ceph/osdmap.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.34\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.34\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.159\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.119\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.61\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.17.11\",\"lessThanOrEqual\":\"6.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/57f5fbae9f1024aba17ff75e00433324115c548a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4368b7f97014e1015445d61abd0b27c4c6e8424\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/becc488a4d864db338ebd4e313aa3c77da24b604\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e67e3be690f5f7e3b031cf29e8d91e6d02a8e30d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ec3797f043756a94ea2d0f106022e14ac4946c02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-30T08:34:00+00:00",
"cve": "CVE-2025-68283",
"id": "CVE-2025-68283",
"initial_release_date": "2025-12-16T00:00:00+00:00",
"product_status:known_affected": "260",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: libceph: replace BUG_ON with bounds check for map-\u003emax_osd",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68283.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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