264 lines
14 KiB
JSON
264 lines
14 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-64318",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-07-19T15:36:31.779Z",
|
|
"datePublished": "2026-07-25T08:49:47.690Z",
|
|
"dateUpdated": "2026-08-17T04:53:18.783Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-17T04:53:18.783Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npartitions: aix: bound the pp_count scan to the ppe array\n\naix_partition() reads the physical volume descriptor into a fixed-size\nstruct pvd and then scans its physical-partition-extent array:\n\n\tint numpps = be16_to_cpu(pvd->pp_count);\n\t...\n\tfor (i = 0; i < numpps; i += 1) {\n\t\tstruct ppe *p = pvd->ppe + i;\n\t\t...\n\t\tlp_ix = be16_to_cpu(p->lp_ix);\n\npvd points at a single kmalloc()'d struct pvd whose ppe[] member holds a\nfixed ARRAY_SIZE(pvd->ppe) (1016) entries, but the loop runs up to the\non-disk pp_count. pp_count is an unvalidated __be16 read straight from\nthe descriptor, so a crafted AIX image with pp_count larger than 1016\ndrives the loop to read pvd->ppe[i] past the end of the allocation (up\nto 65535 entries, ~2 MB out of bounds).\n\nThe partition scan runs without mounting anything, when a block device\nwith a crafted AIX/IBM partition table appears (an attacker-supplied\nimage attached with losetup -P, or a device auto-scanned by udev), via\nmsdos_partition() -> aix_partition().\n\nClamp the scan to the number of entries the ppe[] array can hold."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
|
|
"baseScore": 7.1,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - An attacker with local code execution can supply a crafted image through an unprivileged UDisks loop-setup operation with partition scanning enabled. No network protocol directly invokes this parser.\nAC:L - On an affected build, attacker-controlled on-disk fields deterministically reach the oversized scan without a race or memory-layout requirement for triggering the out-of-bounds access.\nPR:L - A basic active desktop user can request loop setup through UDisks under its default policy, while the kernel loop configuration path itself has no capability check. Initial-namespace root is not required in this deployment.\nUI:N - The attacker can initiate loop setup and partition scanning directly, without requiring another user to mount or open the image.\nS:U - The vulnerable partition parser and the affected kernel memory belong to the same operating-system security authority, with no demonstrated VM, IOMMU, or sandbox boundary crossing.\nC:H - The attacker-controlled count can cause 16-bit reads across nearly 2 MiB beyond the approximately 32 KiB allocation, sampling unrelated kernel memory. This is substantially more than a small bounded disclosure.\nI:N - The faulty accesses are reads; the derived logical-volume index is range-checked, and subsequent writes remain within the allocated lvip and partition-state arrays. No out-of-bounds write or control-flow write primitive is present.\nA:H - The slab out-of-bounds access is KASAN-confirmed and can produce an oops or panic on hardened kernels or when the traversal reaches inaccessible memory. An attacker can repeat partition scans to sustain denial of service."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"block/partitions/aix.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "09861651617ba0fec089e8b9477439e68398c110",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "5eacdb1967378f5e5591cd27a2d8cdee2df1a599",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "b5e9c09309e18fd9839ad007c238120353ca0cc4",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "fd94a779020f2ecc8b2607f4c20b34acb1763b9a",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "4671bb74bba05fdd4acf670a35758c29e8c97b83",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "ce93228e2193a17d2c58b656e439bb39fe5c3af8",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "44f37ee92fdcd377c41bdf6a31cdd8cc7d4c410e",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6",
|
|
"lessThan": "2dc0bfd2fe355fb930de63c2f2eb8ced8570c579",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"block/partitions/aix.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "3.11",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "3.11",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.261",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.212",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.178",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.145",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.96",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.39",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.1.4",
|
|
"lessThanOrEqual": "7.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2",
|
|
"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": "3.11",
|
|
"versionEndExcluding": "5.10.261"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "5.15.212"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "6.1.178"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "6.6.145"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "6.12.96"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "6.18.39"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "7.1.4"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.11",
|
|
"versionEndExcluding": "7.2"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/09861651617ba0fec089e8b9477439e68398c110"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/5eacdb1967378f5e5591cd27a2d8cdee2df1a599"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b5e9c09309e18fd9839ad007c238120353ca0cc4"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/fd94a779020f2ecc8b2607f4c20b34acb1763b9a"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4671bb74bba05fdd4acf670a35758c29e8c97b83"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/ce93228e2193a17d2c58b656e439bb39fe5c3af8"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/44f37ee92fdcd377c41bdf6a31cdd8cc7d4c410e"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/2dc0bfd2fe355fb930de63c2f2eb8ced8570c579"
|
|
}
|
|
],
|
|
"title": "partitions: aix: bound the pp_count scan to the ppe array",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
}
|
|
}
|
|
} |