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vuln-cve/data/2025/38xxx/CVE-2025-38715.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-38715",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-04-16T04:51:24.033Z",
"datePublished": "2025-09-04T15:33:09.954Z",
"dateUpdated": "2026-08-05T12:04:13.726Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-05T12:04:13.726Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfs: fix slab-out-of-bounds in hfs_bnode_read()\n\nThis patch introduces is_bnode_offset_valid() method that checks\nthe requested offset value. Also, it introduces\ncheck_and_correct_requested_length() method that checks and\ncorrect the requested length (if it is necessary). These methods\nare used in hfs_bnode_read(), hfs_bnode_write(), hfs_bnode_clear(),\nhfs_bnode_copy(), and hfs_bnode_move() with the goal to prevent\nthe access out of allocated memory and triggering the crash."
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached through local filesystem operations (mount(2) plus ordinary readdir/lookup/create/unlink/write syscalls) on an HFS volume; there is no network-facing component.\nAC:L - Triggering is fully deterministic — the attacker crafts the B-tree record offset table in the HFS image so that off/len exceed node_size, and the OOB access happens on the first access to that node with no race or uncontrollable memory-layout precondition.\nPR:L - On typical desktop/kiosk/embedded deployments an unprivileged user can get a crafted HFS-formatted removable device mounted via udisks2/autofs, and every corrupting path (hfs_brec_remove → hfs_bnode_move, __hfs_ext_write_extent → hfs_bnode_write, hfs_readdir → hfs_bnode_read) is then driven by ordinary unprivileged file operations on the mounted volume.\nUI:N - The attacker supplies the malicious image and performs the mount/file access themselves in the auto-mount scenario, so no separate victim action is required; this matches the kernel CNA's treatment of the sibling defect in this same code (CVE-2026-64361).\nS:U - The out-of-bounds accesses corrupt kernel heap and page-cache memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - hfs_bnode_read()/hfs_bnode_copy() read adjacent slab and page-cache memory with an attacker-chosen offset and length, and that data is surfaced to userspace as directory entries, catalog records, and file extent data, giving an effectively arbitrary kernel-memory read primitive.\nI:H - hfs_bnode_write(), hfs_bnode_clear(), and hfs_bnode_move() perform out-of-bounds writes with attacker-controlled offset, length, and largely attacker-controlled content (e.g. the underflowed length in hfs_brec_remove and the unchecked entrylength in __hfs_ext_write_extent), yielding heap corruption exploitable for control-flow hijack.\nA:H - The bug produces KASAN slab-out-of-bounds reports and, via the underflowed lengths, multi-gigabyte memmove/memcpy operations past the node buffer, reliably causing kernel oops or panic."
}
]
}
],
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"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
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],
"versions": [
{
"version": "2.6.12",
"status": "affected"
},
{
"version": "0",
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"status": "unaffected",
"versionType": "semver"
},
{
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"lessThanOrEqual": "5.4.*",
"status": "unaffected",
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},
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},
{
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{
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{
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{
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"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
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"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
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{
"url": "https://git.kernel.org/stable/c/a431930c9bac518bf99d6b1da526a7f37ddee8d8"
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],
"title": "hfs: fix slab-out-of-bounds in hfs_bnode_read()",
"x_generator": {
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},
"adp": [
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"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
}
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"providerMetadata": {
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"shortName": "CVE",
"dateUpdated": "2025-11-03T17:41:47.773Z"
}
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"shortName": "siemens-SADP",
"dateUpdated": "2026-05-12T12:05:50.663Z"
},
"affected": [
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"vendor": "Siemens",
"product": "SIMATIC CN 4100",
"versions": [
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],
"references": [
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]
}
}
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