338 lines
17 KiB
JSON
338 lines
17 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-2026-46070",
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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": "2026-05-13T15:03:33.095Z",
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"datePublished": "2026-05-27T12:57:54.345Z",
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"dateUpdated": "2026-10-19T19:26:42.780Z"
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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": "2026-08-05T12:29:28.864Z"
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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/raid5: validate payload size before accessing journal metadata\n\nr5c_recovery_analyze_meta_block() and\nr5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a\njournal metadata block using on-disk payload size fields without\nvalidating them against the remaining space in the metadata block.\n\nA corrupted journal contains payload sizes extending beyond the PAGE_SIZE\nboundary can cause out-of-bounds reads when accessing payload fields or\ncomputing offsets.\n\nAdd bounds validation for each payload type to ensure the full payload\nfits within meta_size before processing."
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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:N/A:H",
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"baseScore": 7.1,
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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 malicious input is the on-disk journal metadata processed during local MD array assembly/start; it is not a network-facing service. Even when the journal sits on remote storage, the vulnerable recovery code runs locally against a block device, so the vector is Local.\nAC:L - A crafted journal block deterministically triggers the OOB read on every assembly; the required CRC is fully attacker-computable from the publicly-stored array UUID, and there is no race or uncontrolled condition.\nPR:L - Exploitation only requires planting crafted bytes on the journal block device (e.g. disk-group/device write access), after which routine or boot-time auto-assembly processes it; this is a low-privilege primitive rather than full init-namespace root.\nUI:N - Array assembly/journal recovery runs automatically at boot or device hot-plug, so no human interaction is needed once the corrupted journal is in place.\nS:U - The OOB read stays within the kernel's own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The flaw is a large, unbounded out-of-bounds read of adjacent kernel memory (FLUSH count up to ~500M entries), which per scoring guidance for unbounded OOB reads is treated as a high confidentiality impact.\nI:N - The fix adds only read-bounds validation; the vulnerability provides no out-of-bounds write or corruption primitive against system data, so there is no integrity impact.\nA:H - OOB access to unmapped memory (or the int overflow / BUG_ON in the read path) causes a kernel oops/panic, crashing the host during array assembly."
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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/raid5-cache.c"
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],
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"versions": [
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{
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"version": "b4c625c67362b3940f619c1a836b4e8329106658",
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"lessThan": "c96c6f01d84b5c67db1bf1cc8591c0b7146826fc",
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"status": "affected",
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},
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},
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{
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},
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{
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"version": "b4c625c67362b3940f619c1a836b4e8329106658",
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"lessThan": "33698bd1b2db9764a29df7751533d33967ff5c98",
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"status": "affected",
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]
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{
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"product": "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/raid5-cache.c"
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],
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"versions": [
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{
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"version": "4.10",
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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": "4.10",
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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": "5.10.258",
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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": "5.15.209",
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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": "6.1.175",
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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": "6.6.140",
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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": "6.12.86",
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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": "6.18.27",
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"lessThanOrEqual": "6.18.*",
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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": "7.0.4",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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"operator": "OR",
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"negate": false,
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"versionStartIncluding": "4.10",
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"versionEndExcluding": "5.10.258"
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{
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"url": "https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98"
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},
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{
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"url": "https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e"
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},
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{
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"url": "https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3"
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},
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{
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"url": "https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d"
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},
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{
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"url": "https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9"
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}
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],
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"title": "md/raid5: validate payload size before accessing journal metadata",
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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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"x_adpType": "supplier",
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-10-15T01:20:21.951Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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}
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],
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"references": [
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{
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
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}
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]
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},
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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-2026-46070",
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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": "2026-10-16T15:19:24.995306Z"
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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": "2026-10-19T19:26:42.780Z"
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}
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}
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]
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}
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} |