172 lines
9.5 KiB
JSON
172 lines
9.5 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-2024-45023",
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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": "2024-08-21T05:34:56.684Z",
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"datePublished": "2024-09-11T15:13:56.451Z",
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"dateUpdated": "2026-08-05T11:37:48.080Z"
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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": "2026-08-05T11:37:48.080Z"
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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\nmd/raid1: Fix data corruption for degraded array with slow disk\n\nread_balance() will avoid reading from slow disks as much as possible,\nhowever, if valid data only lands in slow disks, and a new normal disk\nis still in recovery, unrecovered data can be read:\n\nraid1_read_request\n read_balance\n raid1_should_read_first\n -> return false\n choose_best_rdev\n -> normal disk is not recovered, return -1\n choose_bb_rdev\n -> missing the checking of recovery, return the normal disk\n -> read unrecovered data\n\nRoot cause is that the checking of recovery is missing in\nchoose_bb_rdev(). Hence add such checking to fix the problem.\n\nAlso fix similar problem in choose_slow_rdev()."
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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 vulnerable code is the md/raid1 read path, reached by submitting a READ bio to the local md block device — via a normal file read on a mounted filesystem or a direct block-device read. No remote protocol input is involved.\nAC:L - There is no race, timing window, or memory-layout dependency; once the array is in the ordinary and frequently occurring degraded-plus-rebuilding state (write-mostly member holding valid data, or surviving member with recorded badblocks), every read in the unrecovered range deterministically selects the wrong disk and returns bad data with repeatable success.\nPR:L - No capability or permission check exists anywhere on the raid1_make_request → raid1_read_request → read_balance path; any local unprivileged user reading a file on the filesystem backed by the array triggers the faulty disk selection.\nUI:N - No victim action is required — the recovery state is driven by the kernel's background rebuild, and the corrupt reads occur on the attacker's own I/O as well as on all normal system I/O.\nS:U - The faulty disk selection and its consequences are confined to the md block device and the kernel storage stack, the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Reads are served from sectors of the replacement member that have not yet been rebuilt, returning that disk's prior contents — stale blocks from a re-added or repurposed drive that under the current filesystem layout can belong to other users' or root-owned files — so an unprivileged reader obtains data it is not authorized to see.\nI:H - The array silently returns wrong data instead of valid data or an I/O error, and any read-modify-write above md (filesystem metadata, journal, sub-block or database updates) writes that garbage back, after which raid1_write_request() mirrors it to all members and the corruption becomes permanent and unrecoverable.\nA:H - Corrupted metadata delivered to the filesystem drives error handling into forced read-only remount, XFS shutdown, or panic on errors=panic, and the persisted corruption destroys the array's data — loss of availability of the storage and potentially of the ability to boot."
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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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"drivers/md/raid1.c"
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],
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"versions": [
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{
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"version": "dfa8ecd167c1753d4fc24a517e1d79c603183c94",
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"lessThan": "2febf5fdbf5d9a52ddc3e986971c8609b1582d67",
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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": "dfa8ecd167c1753d4fc24a517e1d79c603183c94",
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"lessThan": "c916ca35308d3187c9928664f9be249b22a3a701",
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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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"drivers/md/raid1.c"
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],
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"versions": [
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{
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"version": "6.9",
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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": "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": "6.10.7",
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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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{
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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": "6.9",
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"versionEndExcluding": "6.10.7"
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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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"versionStartIncluding": "6.9",
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"versionEndExcluding": "6.11"
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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/2febf5fdbf5d9a52ddc3e986971c8609b1582d67"
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},
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{
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"url": "https://git.kernel.org/stable/c/c916ca35308d3187c9928664f9be249b22a3a701"
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}
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],
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"title": "md/raid1: Fix data corruption for degraded array with slow disk",
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-29T15:47:27.863341Z",
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"id": "CVE-2024-45023",
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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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"role": "CISA Coordinator",
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"version": "2.0.3"
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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": "2024-09-29T15:47:42.110Z"
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}
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}
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]
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}
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} |