{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-41016", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.612Z", "datePublished": "2024-07-29T06:37:02.530Z", "dateUpdated": "2026-08-05T11:34:42.104Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:34:42.104Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry()\n\nxattr in ocfs2 maybe 'non-indexed', which saved with additional space\nrequested. It's better to check if the memory is out of bound before\nmemcmp, although this possibility mainly comes from crafted poisonous\nimages." } ], "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 - Reaching `ocfs2_xattr_find_entry()` requires a crafted OCFS2 image to be present locally (loop-mounted file or attached block device/USB stick) and then touched via `getxattr()`/`setxattr()` or an automatic security-label lookup; there is no remote protocol path into the ocfs2 xattr code.\nAC:L - The attacker authors the on-disk metadata, and `xe_name_offset` is an unvalidated `__le16`, so the read at `xs->base + name_offset` (up to 65535 bytes past a 512–4096 byte block buffer) fires deterministically on the first `getxattr()` with a matching type/name-length; no race, no memory-layout luck, and no non-default kernel config is involved, and for offsets inside the same page the \"out-of-bounds\" bytes are other blocks of the attacker's own image, making the `memcmp()` match reliably.\nPR:L - An unprivileged local user can supply the poisoned image (a file for loop-mount or removable media handled by udisks2/systemd automount) and then trigger the path with ordinary unprivileged `getxattr()`/`setxattr()` calls on the crafted file; no capability of the attacker's own is needed.\nUI:N - On the common desktop/kiosk/embedded deployment the attacker-supplied device is mounted automatically by the automount daemon, and the attacking process itself then issues the `getxattr()`/`setxattr()` that hits the unchecked `memcmp()` — no deliberate action by another user is required.\nS:U - The out-of-bounds read and the resulting out-of-bounds write stay inside the kernel's own memory and security authority; no VM, IOMMU, container, or sandbox boundary is crossed.\nC:H - Once the unchecked `memcmp()` matches out-of-bounds bytes, `ocfs2_xattr_ibody_get()`/`ocfs2_xattr_block_get()` `memcpy()` from `xs->base + xe_name_offset + name_len` for `xe_value_size` bytes (attacker-chosen, up to XATTR_SIZE_MAX) straight into the caller's userspace buffer, disclosing kernel memory beyond the buffer_head; the match/no-match result also forms a byte-granular oracle over ~64 KiB past the buffer.\nI:H - The same missing check on the setxattr path (`ocfs2_xattr_ibody_find()`/`ocfs2_xattr_block_find()`) lets a bogus `xe_name_offset` propagate into `ocfs2_xa_set()`, where `ocfs2_xa_reuse_entry()`/`ocfs2_xa_store_value()` `memset()`/`memcpy()` attacker-supplied value bytes at `base + name_offset`, and `ocfs2_xa_block_wipe_namevalue()` `memmove()`s with that offset — an out-of-bounds heap write with controlled content suitable for control-flow hijacking.\nA:H - The read (and the subsequent write/memmove) can land up to ~65790 bytes past a 512–4096 byte block buffer, readily touching unmapped or unrelated memory and producing a kernel oops/page fault (immediate KASAN slab-out-of-bounds), and corrupting neighbouring kernel data crashes the system; the trigger is repeatable on demand." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ocfs2/xattr.c" ], "versions": [ { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "e2b3d7a9d019d4d1a0da6c3ea64a1ff79c99c090", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "e8f9c4af7af7e9e4cd09c0251c7936593147419f", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "57a3d89831fcaa2cdbe024b47c7c36d5a56c3637", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "c031d286eceb82f72f8623b7f4abd2aa491bfb5e", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "cfb926051fab19b10d1e65976211f364aa820180", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "c726dea9d0c806d64c26fcef483b1fb9474d8c5e", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "e4ffea01adf3323c821b6f37e9577d2d400adbaa", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "af77c4fc1871847b528d58b7fdafb4aa1f6a9262", "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/ocfs2/xattr.c" ], "versions": [ { "version": "2.6.28", "status": "affected" }, { "version": "0", "lessThan": "2.6.28", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.323", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.285", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.227", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.168", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.112", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.53", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.12", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.11", "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": "2.6.28", "versionEndExcluding": "4.19.323" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.4.285" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.10.227" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.15.168" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.1.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.6.53" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.10.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e2b3d7a9d019d4d1a0da6c3ea64a1ff79c99c090" }, { "url": "https://git.kernel.org/stable/c/e8f9c4af7af7e9e4cd09c0251c7936593147419f" }, { "url": "https://git.kernel.org/stable/c/57a3d89831fcaa2cdbe024b47c7c36d5a56c3637" }, { "url": "https://git.kernel.org/stable/c/c031d286eceb82f72f8623b7f4abd2aa491bfb5e" }, { "url": "https://git.kernel.org/stable/c/cfb926051fab19b10d1e65976211f364aa820180" }, { "url": "https://git.kernel.org/stable/c/c726dea9d0c806d64c26fcef483b1fb9474d8c5e" }, { "url": "https://git.kernel.org/stable/c/e4ffea01adf3323c821b6f37e9577d2d400adbaa" }, { "url": "https://git.kernel.org/stable/c/af77c4fc1871847b528d58b7fdafb4aa1f6a9262" } ], "title": "ocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry()", 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"supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T11:56:13.855Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem", "versions": [ { "status": "affected", "version": "0", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html" } ] } ] } }