{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-56598", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-27T14:03:06.010Z", "datePublished": "2024-12-27T14:51:04.988Z", "dateUpdated": "2026-08-05T11:45:19.362Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:45:19.362Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: array-index-out-of-bounds fix in dtReadFirst\n\nThe value of stbl can be sometimes out of bounds due\nto a bad filesystem. Added a check with appopriate return\nof error code in that case." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The malicious data is on-disk JFS directory-btree metadata consumed locally via `mount(2)` followed by `getdents(2)` on the crafted directory; no network- or peer-supplied data reaches `dtReadFirst()`. The image is delivered as removable media, a loop-mountable file, or a container/appliance disk blob.\nAC:L - The attacker sets `stbl[0]` to any negative value directly in the on-disk image, so the out-of-bounds index and its exact -32..-4096 byte offset are fully attacker-chosen and fire deterministically on the first `readdir()` of the crafted directory. There is no race, timing window, or memory-layout condition outside the attacker's influence.\nPR:N - The attacker needs no account or privilege on the target system — they only author the crafted JFS image, and the privileged mount is performed by the victim or by automounting tooling. This matches the established scoring for crafted-filesystem-image CVEs in this subsystem.\nUI:R - JFS is `FS_REQUIRES_DEV` without `FS_USERNS_MOUNT`, so the attacker cannot mount the image themselves; a victim (root, udisks/automounter, or image-processing automation) must mount it and then list the directory, though a single `ls` is enough once mounted.\nS:U - The out-of-bounds read and any resulting fault stay inside the kernel of the same host; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The attacker selects any 8-byte window across a 4 KB region preceding the dtree page — for the root case that is inside `struct jfs_inode_info` and neighbouring slab objects, exposing kernel pointers such as `ipimap` and `anon_inode_list` — so the read is far from \"strictly bounded to a few bytes.\" The leaked bytes become `bn`/`psize` and select which attacker-authored disk block is fetched and listed, giving an observable oracle that exfiltrates the disclosed kernel memory through `readdir()` output.\nI:N - `xd` is only dereferenced for reading in `dtReadFirst()`; the out-of-bounds access performs no kernel memory write and yields no corruption or control-flow primitive. The only writes it can steer (`add_missing_indices()`) land on blocks of the attacker's own crafted block device, not on victim-owned kernel or system state.\nA:H - This is the syzbot-reported UBSAN array-index-out-of-bounds; on `CONFIG_UBSAN_BOUNDS` + `CONFIG_UBSAN_TRAP` builds (Android GKI and hardened kernels) the check traps into a kernel panic, and on KASAN/`panic_on_warn` configurations the slab-out-of-bounds report is fatal. The garbage `bn`/`psize` additionally drives `jfs_error()` paths that panic under `errors=panic`, and the trigger is repeatable on every `readdir()` of the crafted directory." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/jfs/jfs_dtree.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "25f1e673ef61d6bf9a6022e27936785896d74948", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "8c97a4d5463a1c972ef576ac499ea9b05f956097", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "823d573f5450ca6be80b36f54d1902ac7cd23fb9", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "2eea5fda5556ef03defebf07b0a12fcd2c5210f4", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fd993b2180b4c373af8b99aa28d4dcda5c2a8f10", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "22dcbf7661c6ffc3247978c254dc40b833a0d429", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "ca84a2c9be482836b86d780244f0357e5a778c46", "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/jfs/jfs_dtree.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.287", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.231", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.174", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.66", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.5", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13", "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": "5.4.287" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.231" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.174" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.66" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.12.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/25f1e673ef61d6bf9a6022e27936785896d74948" }, { "url": "https://git.kernel.org/stable/c/8c97a4d5463a1c972ef576ac499ea9b05f956097" }, { "url": "https://git.kernel.org/stable/c/823d573f5450ca6be80b36f54d1902ac7cd23fb9" }, { "url": "https://git.kernel.org/stable/c/2eea5fda5556ef03defebf07b0a12fcd2c5210f4" }, { "url": "https://git.kernel.org/stable/c/fd993b2180b4c373af8b99aa28d4dcda5c2a8f10" }, { "url": "https://git.kernel.org/stable/c/22dcbf7661c6ffc3247978c254dc40b833a0d429" }, { "url": "https://git.kernel.org/stable/c/ca84a2c9be482836b86d780244f0357e5a778c46" } ], "title": "jfs: array-index-out-of-bounds fix in dtReadFirst", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-56598", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-10-01T20:01:28.259842Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-129", "description": "CWE-129 Improper Validation of Array Index" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:07:13.876Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:50:33.896Z" } } ] } }