{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-47670", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-09-30T16:00:12.936Z", "datePublished": "2024-10-09T14:49:11.938Z", "dateUpdated": "2026-08-05T11:39:19.716Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:39:19.716Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: add bounds checking to ocfs2_xattr_find_entry()\n\nAdd a paranoia check to make sure it doesn't stray beyond valid memory\nregion containing ocfs2 xattr entries when scanning for a match. It will\nprevent out-of-bound access in case of crafted images." } ], "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 - Exploitation requires a crafted OCFS2 filesystem image to be present on the local system (loop-mounted image file or attached block device/USB stick) and then accessed; there is no remote network path to `ocfs2_xattr_find_entry()`. Local access via mount + normal file access syscalls is the vector.\nAC:L - The attacker fully authors the on-disk metadata — `xh_count` is an unvalidated `__le16` and metadata ECC/signature checks are trivially satisfied when crafting the image — so the out-of-bounds walk fires deterministically on the first ACL lookup or getxattr. No race, no memory-layout luck, and no non-default kernel configuration is needed.\nPR:L - An unprivileged local user can supply the malicious image (drop a file for loop-mount, or attach removable media handled by udisks2/systemd automount); the attacker needs no elevated privileges of their own, and once mounted, the triggering ACL path is reached by ordinary unprivileged file access such as `ls -l`.\nUI:N - On the common desktop/kiosk/embedded deployment the image is mounted automatically by the automount daemon when the attacker-supplied device appears, and the vulnerable path is then entered by routine filesystem indexing/ACL lookups with no deliberate victim action required.\nS:U - The out-of-bounds read and write stay within the kernel's own memory and security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - When the unbounded scan matches an entry in out-of-bounds memory, `ocfs2_xattr_ibody_get()` reads `xe_value_size` and `xe_name_offset` from that OOB entry and `memcpy()`s kernel heap contents straight into the caller's `getxattr()` buffer, yielding a large (up to XATTR_SIZE_MAX) kernel memory disclosure to userspace.\nI:H - The corrupted out-of-bounds `xs->here` pointer is propagated to `ocfs2_init_dinode_xa_loc()`/`ocfs2_xa_set()` on the setxattr path (`fs/ocfs2/xattr.c:2794`), producing an out-of-bounds write with attacker-influenced content past the buffer_head data — a heap corruption primitive suitable for control-flow hijacking.\nA:H - The loop can stride up to 65535 × 16 bytes (~1 MiB) beyond a 512–4096 byte block buffer, so it will readily dereference unmapped memory and take a kernel page fault/oops (immediate slab-out-of-bounds under KASAN), crashing the system." } ] } ], "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": "b49a786beb11ff740cb9e0c20b999c2a0e1729c2", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "60c0d36189bad58b1a8e69af8781d90009559ea1", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "34759b7e4493d7337cbc414c132cef378c492a2c", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "5bbe51eaf01a5dd6fb3f0dea81791e5dbc6dc6dd", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "9b32539590a8e6400ac2f6e7cf9cbb8e08711a2f", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "1f6e167d6753fe3ea493cdc7f7de8d03147a4d39", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "8e7bef408261746c160853fc27df3139659f5f77", "status": "affected", "versionType": "git" }, { "version": "cf1d6c763fbcb115263114302485ad17e7933d87", "lessThan": "9e3041fecdc8f78a5900c3aa51d3d756e73264d6", "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/b49a786beb11ff740cb9e0c20b999c2a0e1729c2" }, { "url": "https://git.kernel.org/stable/c/60c0d36189bad58b1a8e69af8781d90009559ea1" }, { "url": "https://git.kernel.org/stable/c/34759b7e4493d7337cbc414c132cef378c492a2c" }, { "url": "https://git.kernel.org/stable/c/5bbe51eaf01a5dd6fb3f0dea81791e5dbc6dc6dd" }, { "url": "https://git.kernel.org/stable/c/9b32539590a8e6400ac2f6e7cf9cbb8e08711a2f" }, { "url": "https://git.kernel.org/stable/c/1f6e167d6753fe3ea493cdc7f7de8d03147a4d39" }, { "url": "https://git.kernel.org/stable/c/8e7bef408261746c160853fc27df3139659f5f77" }, { "url": "https://git.kernel.org/stable/c/9e3041fecdc8f78a5900c3aa51d3d756e73264d6" } ], "title": "ocfs2: add bounds checking to ocfs2_xattr_find_entry()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-10-10T13:20:40.243320Z", "id": "CVE-2024-47670", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-10T13:20:54.800Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T22:20:36.160Z" } } ] } }