368 lines
18 KiB
JSON
368 lines
18 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2023-52600",
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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": "2024-03-02T21:55:42.573Z",
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"datePublished": "2024-03-06T06:45:28.198Z",
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"dateUpdated": "2026-08-05T09:10:34.627Z"
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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": "2026-08-05T09:10:34.627Z"
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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: fix uaf in jfs_evict_inode\n\nWhen the execution of diMount(ipimap) fails, the object ipimap that has been\nreleased may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs\nwhen rcu_core() calls jfs_free_node().\n\nTherefore, when diMount(ipimap) fails, sbi->ipimap should not be initialized as\nipimap."
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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 - The bug is reached only by mounting a crafted JFS block image (mount → jfs_fill_super → jfs_mount → diMount failure unwind → jfs_evict_inode); fs/jfs has no network or adjacent-protocol entry point.\nAC:L - A crafted image that makes diMount(ipimap) fail (e.g. EIO on the imap control page, as in the syzbot repro with rc=-5) deterministically takes the err_ipimap path that leaves the dangling sbi->ipimap; the resulting inode-slab UAF is attacker-triggerable under ordinary mount stress with no uncontrollable victim state.\nPR:L - JFS lacks FS_USERNS_MOUNT so mount(2) needs CAP_SYS_ADMIN, but on desktops/kiosks/shared workstations an unprivileged seat user can attach the malicious image via udisks2/polkit/automount, matching sibling JFS crafted-image scores.\nUI:N - In the automount/udisks scenario the attacker supplies the media and causes it to be mounted in their own session, so no separate victim action is required at exploitation time.\nS:U - The use-after-free corrupts host kernel inode/imap memory only and does not cross a VM, IOMMU, or other separate security authority.\nC:H - The UAF is a slab-use-after-free of the fileset imap inode; reclaiming that object lets an attacker control JFS_IP(ipimap)->i_imap and subsequent diFree() reads, enabling arbitrary kernel memory disclosure.\nI:H - The same reclaimable inode UAF feeds attacker-controlled imap state into diFree() and related metadata updates, yielding a heap write/control-flow hijack primitive consistent with UAF scoring guidance.\nA:H - Syzbot demonstrates a KASAN slab-use-after-free read in jfs_evict_inode during mount unwind, which produces a kernel oops/panic and hard availability loss."
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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/jfs_mount.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": "81b4249ef37297fb17ba102a524039a05c6c5d35",
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"status": "affected",
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"versionType": "git"
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"lessThan": "93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f",
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"status": "affected",
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"lessThan": "bc6ef64dbe71136f327d63b2b9071b828af2c2a8",
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"status": "affected",
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},
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "32e8f2d95528d45828c613417cb2827d866cbdce",
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"status": "affected",
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{
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"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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"lessThan": "1696d6d7d4a1b373e96428d0fe1166bd7c3c795e",
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"status": "affected",
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"status": "affected",
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{
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"lessThan": "e0e1958f4c365e380b17ccb35617345b31ef7bf3",
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"status": "affected",
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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/jfs_mount.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": "4.19.307",
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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": "5.4.269",
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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": "5.10.210",
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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": "5.15.149",
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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": "6.1.77",
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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": "6.6.16",
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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": "6.7.4",
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"lessThanOrEqual": "6.7.*",
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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": "6.8",
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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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"title": "jfs: fix uaf in jfs_evict_inode",
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"type": "ssvc",
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"content": {
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"id": "CVE-2023-52600",
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"options": [
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"version": "2.0.3",
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