{ "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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/hfs/bnode.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "e7d2dc2421e821e4045775e6dc226378328de6f6", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "67ecc81f6492275c9c54280532f558483c99c90e", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a1a60e79502279f996e55052f50cc14919020475", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fe2891a9c43ab87d1a210d61e6438ca6936e2f62", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "384a66b89f9540a9a8cb0f48807697dfabaece4c", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "efc095b35b23297e419c2ab4fc1ed1a8f0781a29", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fc7f732984ec91f30be3e574e0644066d07f2b78", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "eec522fd0d28106b14a59ab2d658605febe4a3bb", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "a431930c9bac518bf99d6b1da526a7f37ddee8d8", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/hfs/bnode.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.297", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.241", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.190", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.43", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.11", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16.2", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17", "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": "2.6.12", "versionEndExcluding": "5.4.297" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.241" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.12.43" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.15.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.16.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e7d2dc2421e821e4045775e6dc226378328de6f6" }, { "url": "https://git.kernel.org/stable/c/67ecc81f6492275c9c54280532f558483c99c90e" }, { "url": "https://git.kernel.org/stable/c/a1a60e79502279f996e55052f50cc14919020475" }, { "url": "https://git.kernel.org/stable/c/fe2891a9c43ab87d1a210d61e6438ca6936e2f62" }, { "url": "https://git.kernel.org/stable/c/384a66b89f9540a9a8cb0f48807697dfabaece4c" }, { "url": "https://git.kernel.org/stable/c/efc095b35b23297e419c2ab4fc1ed1a8f0781a29" }, { "url": "https://git.kernel.org/stable/c/fc7f732984ec91f30be3e574e0644066d07f2b78" }, { "url": "https://git.kernel.org/stable/c/eec522fd0d28106b14a59ab2d658605febe4a3bb" }, { "url": "https://git.kernel.org/stable/c/a431930c9bac518bf99d6b1da526a7f37ddee8d8" } ], "title": "hfs: fix slab-out-of-bounds in hfs_bnode_read()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "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" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:41:47.773Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:05:50.663Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [ { "status": "affected", "version": "0", "lessThan": "V5.0", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html" } ] } ] } }