310 lines
16 KiB
JSON
310 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-68154",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-30T09:28:09.371Z",
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"datePublished": "2026-08-10T11:59:20.250Z",
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"dateUpdated": "2026-10-19T20:58:54.485Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-19T16:30:20.481Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: reject zero bucket types in crush_decode\n\nCRUSH bucket type 0 is reserved for devices. The mapper relies on\nthat invariant and uses type 0 to identify leaf devices.\n\nIf crush_decode() accepts a bucket with type 0, a malformed CRUSH map\ncan make the mapper treat a negative bucket ID as a device and pass it\nto is_out(), which then indexes the OSD weight array with a negative\nvalue.\n\nReject zero bucket types while decoding the CRUSH map so the invalid\nstate never reaches the mapper."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The flaw is reached when the in-kernel Ceph client decodes a crafted CRUSH map inside CEPH_MSG_OSD_MAP received over TCP from a Ceph monitor or OSD, which is a standard network-delivered cluster control message on connected storage clients.\nAC:L - An attacker can reliably craft a CRUSH map with a bucket whose type field is zero and controlled hierarchy/items so crush_do_rule() later calls is_out() with a negative index, without races, victim-specific memory layout, or rare kernel build options.\nPR:N - No local privileges on the victim host are required; a remote attacker who controls, compromises, or MITMs the authenticated Ceph monitor/OSD peer can deliver the malicious OSD map over the established client cluster connection.\nUI:N - No additional victim action is needed at exploit time because poisoned OSD maps are processed automatically and CRUSH placement is recalculated during routine map updates, request rescanning, and normal Ceph client I/O.\nS:U - The vulnerability corrupts or reads kernel memory on the host running the Ceph client, affecting that kernel security domain rather than crossing a VM, container sandbox, or IOMMU boundary.\nC:H - When a type-0 bucket makes the mapper treat a negative bucket ID as a device, is_out() indexes osd_weight[] with a negative value, causing an out-of-bounds read of adjacent kernel memory beyond the OSD weight array.\nI:H - This out-of-bounds kernel heap access during CRUSH placement is memory corruption in a privileged parser/mapper path that can be leveraged for further kernel memory control and arbitrary code execution, not only information disclosure.\nA:H - The invalid negative indexing during CRUSH mapping can dereference unmapped or non-resident memory and trigger a kernel oops or panic, causing complete loss of availability on affected Ceph client hosts."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ceph/osdmap.c"
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],
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"versions": [
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "952ca5dc99913d169263f59fd689f586729a13c1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "146461f09565afe3665e65b0423d3d6b0fe806c5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "80fc40e11cda1b5d990a3f69c6efa344fb5cd987",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "b8a9fb6bf806f9c4891e71ae1beab0c07c23a877",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "826cd1de5802fd392922785f9b64d76e65d2a100",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "70998f91030ee083ecb336a1dff0701c20a38081",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f24e9980eb860d8600cbe5ef3d2fd9295320d229",
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"lessThan": "05f90284223381005d6bcddab3fda4a97f9c3401",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ceph/osdmap.c"
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],
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"versions": [
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{
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"version": "2.6.34",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.34",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.265",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.216",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.148",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.101",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.42",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "5.10.265"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "6.1.183"
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "6.6.148"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "7.1.6"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/952ca5dc99913d169263f59fd689f586729a13c1"
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},
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{
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"url": "https://git.kernel.org/stable/c/146461f09565afe3665e65b0423d3d6b0fe806c5"
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},
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{
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"url": "https://git.kernel.org/stable/c/80fc40e11cda1b5d990a3f69c6efa344fb5cd987"
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},
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{
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"url": "https://git.kernel.org/stable/c/b8a9fb6bf806f9c4891e71ae1beab0c07c23a877"
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},
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{
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"url": "https://git.kernel.org/stable/c/826cd1de5802fd392922785f9b64d76e65d2a100"
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},
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{
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"url": "https://git.kernel.org/stable/c/3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56"
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},
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{
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"url": "https://git.kernel.org/stable/c/70998f91030ee083ecb336a1dff0701c20a38081"
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},
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{
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"url": "https://git.kernel.org/stable/c/05f90284223381005d6bcddab3fda4a97f9c3401"
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}
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],
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"title": "libceph: reject zero bucket types in crush_decode",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-68154",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:45:00.533524Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-20",
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"description": "CWE-20 Improper Input Validation"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T20:58:54.485Z"
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}
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}
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]
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}
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} |