CVE-2025-71225 (GCVE-0-2025-71225)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:21 – Updated: 2026-06-11 18:44
VLAI
Title
md: suspend array while updating raid_disks via sysfs
Summary
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e2d59925221cd562e07fee38ec8839f7209ae603 , < 165d1359f945b72c5f90088f60d48ff46115269e (git)
Affected: e2d59925221cd562e07fee38ec8839f7209ae603 , < 0107b18cd8ac17eb3e54786adc05a85cdbb6ef22 (git)
Affected: e2d59925221cd562e07fee38ec8839f7209ae603 , < 2cc583653bbe050bacd1cadcc9776d39bf449740 (git)
Affected: 1b9203bb4c658c0242afa6fdb025c71d2fc3ad76 (git)
Affected: 8ccf6cfb157419847f3cb2bfdfbcdbd39860e8e9 (git)
Affected: 3.4.59 , < 3.5 (semver)
Affected: 3.9.7 , < 3.10 (semver)
Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.