md: suspend array while updating raid_disks via sysfs
In the Linux kernel, the following vulnerability has been resolved: md: suspend array while updating raid_disks via sysfs In raid1_reshape(), freeze_array() is called before modifying the r1bio memory pool (conf->r1bio_pool) and conf->raid_disks, and unfreeze_array() is called after the update is completed. However, freeze_array() only waits until nr_sync_pending and (nr_pending - nr_queued) of all buckets reaches zero. When an I/O error occurs, nr_queued is increased and the corresponding r1bio is queued to either retry_list or bio_end_io_list. As a result, freeze_array() may unblock before these r1bios are released. This can lead to a situation where conf->raid_disks and the mempool have already been updated while queued r1bios, allocated with the old raid_disks value, are later released. Consequently, free_r1bio() may access memory out of bounds in put_all_bios() and release r1bios of the wrong size to the new mempool, potentially causing issues with the mempool as well. Since only normal I/O might increase nr_queued while an I/O error occurs, suspending the array avoids this issue. Note: Updating raid_disks via ioctl SET_ARRAY_INFO already suspends the array. Therefore, we suspend the array when updating raid_disks via sysfs to avoid this issue too.
CVE-2025-71225
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-2025-71225
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": "e2d59925221cd562e07fee38ec8839f7209ae603",
"lessThan": "863b9b7be824a6b2c0587532d3ece3022c6dd451",
"versionType": "git"
},
{
"status": "affected",
"version": "e2d59925221cd562e07fee38ec8839f7209ae603",
"lessThan": "165d1359f945b72c5f90088f60d48ff46115269e",
"versionType": "git"
},
{
"status": "affected",
"version": "e2d59925221cd562e07fee38ec8839f7209ae603",
"lessThan": "0107b18cd8ac17eb3e54786adc05a85cdbb6ef22",
"versionType": "git"
},
{
"status": "affected",
"version": "e2d59925221cd562e07fee38ec8839f7209ae603",
"lessThan": "2cc583653bbe050bacd1cadcc9776d39bf449740",
"versionType": "git"
},
{
"status": "affected",
"version": "1b9203bb4c658c0242afa6fdb025c71d2fc3ad76",
"versionType": "git"
},
{
"status": "affected",
"version": "8ccf6cfb157419847f3cb2bfdfbcdbd39860e8e9",
"versionType": "git"
},
{
"status": "affected",
"version": "3.4.59",
"lessThan": "3.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.9.7",
"lessThan": "3.10",
"versionType": "semver"
}
],
"programFiles": [
"drivers/md/md.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.70",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.10",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/md.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-71225
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46086 · Revision 1
- Added to Heist Feed
- Publisher date