md/raid5: validate payload size before accessing journal metadata
Summary
| CVE | CVE-2026-46070 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 14:17:28 UTC |
| Updated | 2026-05-30 11:17:20 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: md/raid5: validate payload size before accessing journal metadata r5c_recovery_analyze_meta_block() and r5l_recovery_verify_data_checksum_for_mb() iterate over payloads in a journal metadata block using on-disk payload size fields without validating them against the remaining space in the metadata block. A corrupted journal contains payload sizes extending beyond the PAGE_SIZE boundary can cause out-of-bounds reads when accessing payload fields or computing offsets. Add bounds validation for each payload type to ensure the full payload fits within meta_size before processing. |
Risk And Classification
Primary CVSS: v3.1 7.1 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS: 0.000120000 probability, percentile 0.018210000 (date 2026-05-31)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | CNA | DECLARED | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected b4c625c67362b3940f619c1a836b4e8329106658 33698bd1b2db9764a29df7751533d33967ff5c98 git | Not specified |
| CNA | Linux | Linux | affected b4c625c67362b3940f619c1a836b4e8329106658 c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e git | Not specified |
| CNA | Linux | Linux | affected b4c625c67362b3940f619c1a836b4e8329106658 73ce72edd113374801045924d4417199963f73a3 git | Not specified |
| CNA | Linux | Linux | affected b4c625c67362b3940f619c1a836b4e8329106658 406aa86394ead347c47428fb51b6359bdaa2257d git | Not specified |
| CNA | Linux | Linux | affected b4c625c67362b3940f619c1a836b4e8329106658 b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9 git | Not specified |
| CNA | Linux | Linux | affected 4.10 | Not specified |
| CNA | Linux | Linux | unaffected 4.10 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.140 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.86 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.27 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.4 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1-rc1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/73ce72edd113374801045924d4417199963f73a3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/33698bd1b2db9764a29df7751533d33967ff5c98 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/406aa86394ead347c47428fb51b6359bdaa2257d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.