md/raid5: validate payload size before accessing journal metadata
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.258, 5.15.209, 6.1.175, 6.12.86, 6.18.27, 6.6.140, 7.0.4
- CVEs
- CVE-2026-46070
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 16:04 UTC · Revision 1
Source evidence
md/raid5: validate payload size before accessing journal metadata
core-osv · Original sourcePublished 27 May 2026, 12:57 UTC
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.
osv:CVE-2026-46070
Kernel
Fixed versions: 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4
Complete source record
{
"id": "12aee1a27a1a00037f1217ea27c8087217e74b40990b500efe229876f11764df",
"url": "https://osv.dev/vulnerability/CVE-2026-46070",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "md/raid5: validate payload size before accessing journal metadata",
"summary": "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.",
"evidence": "osv:CVE-2026-46070",
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"modified": "2026-10-28T02:30:37.188800665Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/ef4851d8324fd978ca1ff9ec76a275438f887743",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46070.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-46070",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
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"source_id": "core-osv",
"document_id": 504481,
"published_at": "2026-05-27T12:57:54.345+00:00"
}