{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-41017", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.612Z", "datePublished": "2024-07-29T06:37:03.390Z", "dateUpdated": "2026-08-05T11:34:43.174Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:34:43.174Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: don't walk off the end of ealist\n\nAdd a check before visiting the members of ea to\nmake sure each ea stays within the ealist." } ], "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 locally-mounted crafted JFS image and is triggered through the getxattr()/listxattr() syscalls (or implicitly via jfs_get_acl() during permission checks) on the attacker's own file. There is no network-facing path into fs/jfs.\nAC:L - The attacker fully authors the on-disk EA list, so the out-of-bounds offset and length are deterministic and reliably reproducible with no dependence on uncontrolled state. The double-fetch write variant in jfs_listxattr() is likewise attacker-paced, since they control both the heap churn adjacent to the inline-EA slab object and the rate of syscalls.\nPR:L - On desktop, kiosk and workstation deployments removable media is mounted for the logged-in unprivileged user by udisks2/autofs, after which any unprivileged local user can trigger the overread on the crafted file. No CAP_SYS_ADMIN is needed for the triggering getxattr()/listxattr() calls themselves.\nUI:N - Once the filesystem is present, the attacker triggers the bug entirely on their own by calling getxattr()/listxattr() on their crafted file — even an `ls -l` style permission check reaches it via jfs_get_acl(). No victim action is required at exploitation time.\nS:U - The out-of-bounds access and its consequences are confined to the kernel's own memory and the same security authority. No hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - An attacker-chosen valuelen of up to 65535 makes __jfs_getxattr() memcpy up to 64 KB from beyond the EA buffer — frequently the 128-byte i_inline_ea field inside a jfs_inode_info slab object — and that adjacent kernel heap is returned directly to userspace. This is a large, unbounded infoleak that can disclose kernel pointers, keys, and other tasks' data.\nI:H - jfs_listxattr() re-derives namelen, the os2-prefix decision, and NEXT_EA() from out-of-bounds memory in both its sizing pass and its copy pass, so a concurrent change to those bytes lets the copy pass overflow the kvmalloc'd klist buffer — a kernel heap out-of-bounds write. Additionally, out-of-bounds heap bytes are parsed as POSIX ACL entries by jfs_get_acl(), corrupting the access rules applied to the inode.\nA:H - Reading up to 64 KB past a 128-byte inline buffer or a metapage routinely walks into unmapped pages, producing a general protection fault or oops, and KASAN/hardened configurations panic on the slab overread. The heap overflow write in jfs_listxattr() likewise corrupts allocator state and crashes the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/jfs/xattr.c" ], "versions": [ { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "7f91bd0f2941fa36449ce1a15faaa64f840d9746", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "fc16776a82e8df97b6c4f9a10ba95aa44cef7ba5", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "6386f1b6a10e5d1ddd03db4ff6dfc55d488852ce", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "7e21574195a45fc193555fa40e99fed16565ff7e", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "4e034f7e563ab723b93a59980e4a1bb33198ece8", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "17440dbc66ab98b410514b04987f61deedb86751", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "f4435f476b9bf059cd9e26a69f5b29c768d00375", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "dbde7bc91093fa9c2410e418b236b70fde044b73", "status": "affected", "versionType": "git" }, { "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "d0fa70aca54c8643248e89061da23752506ec0d4", "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/xattr.c" ], "versions": [ { "version": "2.6.12", "status": "affected" }, { "version": "0", "lessThan": "2.6.12", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.319", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.281", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.223", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.164", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.102", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.43", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.12", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10.2", "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": "2.6.12", "versionEndExcluding": "4.19.319" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.4.281" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.10.223" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "5.15.164" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.1.102" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.6.43" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.9.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.10.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.12", "versionEndExcluding": "6.11" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7f91bd0f2941fa36449ce1a15faaa64f840d9746" }, { "url": "https://git.kernel.org/stable/c/fc16776a82e8df97b6c4f9a10ba95aa44cef7ba5" }, { "url": "https://git.kernel.org/stable/c/6386f1b6a10e5d1ddd03db4ff6dfc55d488852ce" }, { "url": "https://git.kernel.org/stable/c/7e21574195a45fc193555fa40e99fed16565ff7e" }, { "url": 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