263 lines
14 KiB
JSON
263 lines
14 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-2024-53147",
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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": "2024-11-19T17:17:24.998Z",
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"datePublished": "2024-12-24T11:28:47.695Z",
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"dateUpdated": "2026-10-30T12:20:05.405Z"
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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": "2026-10-30T12:20:05.405Z"
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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\nexfat: fix out-of-bounds access of directory entries\n\nIn the case of the directory size is greater than or equal to\nthe cluster size, if start_clu becomes an EOF cluster(an invalid\ncluster) due to file system corruption, then the directory entry\nwhere ei->hint_femp.eidx hint is outside the directory, resulting\nin an out-of-bounds access, which may cause further file system\ncorruption.\n\nThis commit adds a check for start_clu, if it is an invalid cluster,\nthe file or directory will be treated as empty."
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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 - Triggering requires a crafted exFAT image to be mounted and then a lookup/create performed in the corrupt directory, which is a local operation — an unprivileged desktop user can loop-mount an arbitrary image via udisks2, or operate on an automounted USB/SD card. There is no network-reachable path into fs/exfat.\nAC:L - The attacker fully controls the on-disk bytes: setting a directory's stream-extension dentry to size >= cluster_size with an invalid start_clu is deterministic, and the follow-up lookup+create is a plain syscall sequence with no race, timing, or memory-layout dependency.\nPR:L - Only ordinary local user privileges are needed — udisks2/automount lets an unprivileged session user get the crafted exFAT image mounted, and any low-privileged user can then run lookup/creat/mkdir in the corrupt directory to drive the out-of-bounds access. Real root in the init namespace is not required.\nUI:N - In the self-mount scenario the attacker performs every step themselves — mount the image via the automount/loop path, then issue the lookup and create — with no action by any other user required.\nS:U - The corruption and disclosure stay within the kernel's own security authority and the filesystem it manages; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Because hint_femp.eidx and the inflated directory size index clusters outside the directory, readdir/lookup read clusters belonging to other files — or arbitrary sectors of the device with the unvalidated `cur_clu += clu_offset` path — and hand that content back to userspace as directory-entry names and attributes.\nI:H - Directory entries are written into clusters owned by other files, and exfat_chain_cont_cluster() rewrites FAT entries for clusters it does not own, splicing another file's clusters into the corrupt directory; this destroys unrelated user data and filesystem metadata, exactly the \"further file system corruption\" the commit cites.\nA:H - The bogus accesses funnel into exfat_fs_error(), which calls panic() under the supported errors=panic mount option and forces the filesystem read-only under the default, and the resulting inconsistent inode (i_size claiming N+1 clusters over a one-cluster chain) yields repeated I/O failures on every subsequent operation."
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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/exfat/namei.c"
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],
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"versions": [
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{
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"version": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
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"lessThan": "98e3572505a9ec550b5296c67c4517120356c8d6",
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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": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
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"lessThan": "82dc96f0f4eec8afdde8467d21d1b6b989dbb20a",
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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": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
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"lessThan": "a0120d6463368378539ef928cf067d02372efb8c",
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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": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
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"lessThan": "3ddd1cb2b458ff6a193bc845f408dfff217db29e",
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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": "1acf1a564b6034b5af1e7fb23cb98cb3bb4f6003",
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"lessThan": "184fa506e392eb78364d9283c961217ff2c0617b",
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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/exfat/namei.c"
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],
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"versions": [
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{
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"version": "5.7",
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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": "5.7",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.11.11",
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"lessThanOrEqual": "6.11.*",
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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": "6.12.2",
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"lessThanOrEqual": "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": "6.13",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.6.160"
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.13"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/98e3572505a9ec550b5296c67c4517120356c8d6"
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},
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{
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"url": "https://git.kernel.org/stable/c/82dc96f0f4eec8afdde8467d21d1b6b989dbb20a"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0120d6463368378539ef928cf067d02372efb8c"
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},
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{
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"url": "https://git.kernel.org/stable/c/3ddd1cb2b458ff6a193bc845f408dfff217db29e"
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},
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{
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"url": "https://git.kernel.org/stable/c/184fa506e392eb78364d9283c961217ff2c0617b"
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}
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],
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"title": "exfat: fix out-of-bounds access of directory entries",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.1,
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"attackVector": "LOCAL",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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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-2024-53147",
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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": "2025-10-01T20:09:50.211363Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-125",
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"description": "CWE-125 Out-of-bounds Read"
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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": "2025-10-01T20:17:09.224Z"
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}
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}
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]
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}
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} |