386 lines
19 KiB
JSON
386 lines
19 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-41017",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-12T12:17:45.612Z",
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"datePublished": "2024-07-29T06:37:03.390Z",
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"dateUpdated": "2026-08-05T11:34:43.174Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:34:43.174Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/jfs/xattr.c"
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],
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"versions": [
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "7f91bd0f2941fa36449ce1a15faaa64f840d9746",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "fc16776a82e8df97b6c4f9a10ba95aa44cef7ba5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "6386f1b6a10e5d1ddd03db4ff6dfc55d488852ce",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "7e21574195a45fc193555fa40e99fed16565ff7e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "4e034f7e563ab723b93a59980e4a1bb33198ece8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "17440dbc66ab98b410514b04987f61deedb86751",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "f4435f476b9bf059cd9e26a69f5b29c768d00375",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "dbde7bc91093fa9c2410e418b236b70fde044b73",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "d0fa70aca54c8643248e89061da23752506ec0d4",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/jfs/xattr.c"
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],
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"versions": [
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{
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"version": "2.6.12",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.12",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.19.319",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.281",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.223",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.164",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.102",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.43",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.9.12",
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"lessThanOrEqual": "6.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10.2",
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"lessThanOrEqual": "6.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.11",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"nodes": [
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"operator": "OR",
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.12",
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"versionEndExcluding": "4.19.319"
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}
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],
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"title": "jfs: don't walk off the end of ealist",
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"shortName": "CVE",
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"dateUpdated": "2025-11-03T21:59:20.503Z"
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-41017",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:24:38.749773Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-11T17:34:05.610Z"
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}
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}
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]
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}
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} |