{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-46070", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.095Z", "datePublished": "2026-05-27T12:57:54.345Z", "dateUpdated": "2026-08-05T12:29:28.864Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:29:28.864Z" }, "descriptions": [ { "lang": "en", "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." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/md/raid5-cache.c" ], "versions": [ { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "c96c6f01d84b5c67db1bf1cc8591c0b7146826fc", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "ef4851d8324fd978ca1ff9ec76a275438f887743", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "28d3ff7109c66e99dc1b7cddacb5c760849620ef", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "33698bd1b2db9764a29df7751533d33967ff5c98", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "73ce72edd113374801045924d4417199963f73a3", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "406aa86394ead347c47428fb51b6359bdaa2257d", "status": "affected", "versionType": "git" }, { "version": "b4c625c67362b3940f619c1a836b4e8329106658", "lessThan": "b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/md/raid5-cache.c" ], "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.6.140" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.12.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.18.27" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.0.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c96c6f01d84b5c67db1bf1cc8591c0b7146826fc" }, { "url": "https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743" }, { "url": "https://git.kernel.org/stable/c/28d3ff7109c66e99dc1b7cddacb5c760849620ef" }, { "url": "https://git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98" }, { "url": "https://git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e" }, { "url": "https://git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3" }, { "url": "https://git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d" }, { "url": "https://git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9" } ], "title": "md/raid5: validate payload size before accessing journal metadata", "x_generator": { "engine": "bippy-1.2.0" } } } }