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CVE-2025-71225— md: suspend array while updating raid_disks via sysfs

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于通过sysfs更新raid_disks时未正确挂起阵列，可能导致越界内存访问和内存池问题。

AI Predicted 7.8 Difficulty: Hard EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux e2d59925221cd562e07fee38ec8839f7209ae603< 165d1359f945b72c5f90088f60d48ff46115269e affected
e2d59925221cd562e07fee38ec8839f7209ae603< 0107b18cd8ac17eb3e54786adc05a85cdbb6ef22 affected
e2d59925221cd562e07fee38ec8839f7209ae603< 2cc583653bbe050bacd1cadcc9776d39bf449740 affected
1b9203bb4c658c0242afa6fdb025c71d2fc3ad76 affected
8ccf6cfb157419847f3cb2bfdfbcdbd39860e8e9 affected
3.4.59< 3.5 affected
3.9.7< 3.10 affected
3.10 affected
… +4 more rows
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I. Basic Information for CVE-2025-71225

Vulnerability Information
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Vulnerability Title
md: suspend array while updating raid_disks via sysfs
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于通过sysfs更新raid_disks时未正确挂起阵列，可能导致越界内存访问和内存池问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e2d59925221cd562e07fee38ec8839f7209ae603 ~ 165d1359f945b72c5f90088f60d48ff46115269e -
Linux Linux 3.10 -

II. Public POCs for CVE-2025-71225

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III. Intelligence Information for CVE-2025-71225

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Same Patch Batch · Linux · 2026-02-18 · 31 CVEs total

CVE-2025-71234 8.8 HIGH wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add
CVE-2026-23230 8.8 HIGH smb: client: split cached_fid bitfields to avoid shared-byte RMW races
CVE-2026-23226 8.8 HIGH ksmbd: add chann_lock to protect ksmbd_chann_list xarray
CVE-2026-23227 7.8 HIGH drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to
CVE-2026-23225 7.8 HIGH sched/mmcid: Don't assume CID is CPU owned on mode switch
CVE-2026-23224 7.8 HIGH erofs: fix UAF issue for file-backed mounts w/ directio option
CVE-2026-23222 7.8 HIGH crypto: omap - Allocate OMAP_CRYPTO_FORCE_COPY scatterlists correctly
CVE-2025-71236 7.5 HIGH scsi: qla2xxx: Validate sp before freeing associated memory
CVE-2025-71235 scsi: qla2xxx: Delay module unload while fabric scan in progress
CVE-2026-23212 bonding: annotate data-races around slave->last_rx
CVE-2026-23229 crypto: virtio - Add spinlock protection with virtqueue notification
CVE-2026-23228 smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
CVE-2025-71227 wifi: mac80211: don't WARN for connections on invalid channels
CVE-2026-23223 xfs: fix UAF in xchk_btree_check_block_owner
CVE-2026-23221 bus: fsl-mc: fix use-after-free in driver_override_show()
CVE-2026-23220 ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths
CVE-2025-71237 nilfs2: Fix potential block overflow that cause system hang
CVE-2026-23213 drm/amd/pm: Disable MMIO access during SMU Mode 1 reset
CVE-2026-23211 mm, swap: restore swap_space attr aviod kernel panic
CVE-2025-71233 PCI: endpoint: Avoid creating sub-groups asynchronously

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71225

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