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.
CVE-2026-46070
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-46070
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "c96c6f01d84b5c67db1bf1cc8591c0b7146826fc",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "ef4851d8324fd978ca1ff9ec76a275438f887743",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "28d3ff7109c66e99dc1b7cddacb5c760849620ef",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "33698bd1b2db9764a29df7751533d33967ff5c98",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "c3a1cf78bd1bbb51b2cc5189b4743056553c1e0e",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "73ce72edd113374801045924d4417199963f73a3",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "406aa86394ead347c47428fb51b6359bdaa2257d",
"versionType": "git"
},
{
"status": "affected",
"version": "b4c625c67362b3940f619c1a836b4e8329106658",
"lessThan": "b0cc3ae97e893bf54bbce447f4e9fd2e0b88bff9",
"versionType": "git"
}
],
"programFiles": [
"drivers/md/raid5-cache.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.258",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.209",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/raid5-cache.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46070
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40113 · Revision 1
- Added to Heist Feed
- Publisher date