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CVE-2025-38140— dm: limit swapping tables for devices with zone write plugs

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dm未正确处理分区表交换，可能导致内存损坏。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux bb37d77239af25cde59693dbe3fac04dd17d7b29< 13c0425c99c67c2296f1eec61254a4f91484eac3 affected
bb37d77239af25cde59693dbe3fac04dd17d7b29< ac8acb0bfd98a1c65f3ca9a3e217a766124eebd8 affected
bb37d77239af25cde59693dbe3fac04dd17d7b29< 121218bef4c1df165181f5cd8fc3a2246bac817e affected
5.14 affected
< 5.14 unaffected
6.12.114≤ 6.12.* unaffected
6.15.3≤ 6.15.* unaffected
6.16≤ * unaffected
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I. Basic Information for CVE-2025-38140

Vulnerability Information
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Vulnerability Title
dm: limit swapping tables for devices with zone write plugs
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dm: limit swapping tables for devices with zone write plugs dm_revalidate_zones() only allowed new or previously unzoned devices to call blk_revalidate_disk_zones(). If the device was already zoned, disk->nr_zones would always equal md->nr_zones, so dm_revalidate_zones() returned without doing any work. This would make the zoned settings for the device not match the new table. If the device had zone write plug resources, it could run into errors like bdev_zone_is_seq() reading invalid memory because disk->conv_zones_bitmap was the wrong size. If the device doesn't have any zone write plug resources, calling blk_revalidate_disk_zones() will always correctly update device. If blk_revalidate_disk_zones() fails, it can still overwrite or clear the current disk->nr_zones value. In this case, DM must restore the previous value of disk->nr_zones, so that the zoned settings will continue to match the previous value that it fell back to. If the device already has zone write plug resources, blk_revalidate_disk_zones() will not correctly update them, if it is called for arbitrary zoned device changes. Since there is not much need for this ability, the easiest solution is to disallow any table reloads that change the zoned settings, for devices that already have zone plug resources. Specifically, if a device already has zone plug resources allocated, it can only switch to another zoned table that also emulates zone append. Also, it cannot change the device size or the zone size. A device can switch to an error target.
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dm未正确处理分区表交换，可能导致内存损坏。
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 bb37d77239af25cde59693dbe3fac04dd17d7b29 ~ 13c0425c99c67c2296f1eec61254a4f91484eac3 -
Linux Linux 5.14 -

II. Public POCs for CVE-2025-38140

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III. Intelligence Information for CVE-2025-38140

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Patches & Fixes for CVE-2025-38140 (1)

Same Patch Batch · Linux · 2025-07-03 · 78 CVEs total

CVE-2025-38139 9.8 CRITICAL netfs: Fix oops in write-retry from mis-resetting the subreq iterator
CVE-2025-38123 9.8 CRITICAL net: wwan: t7xx: Fix napi rx poll issue
CVE-2025-38146 9.4 CRITICAL net: openvswitch: Fix the dead loop of MPLS parse
CVE-2025-38120 9.4 CRITICAL netfilter: nf_set_pipapo_avx2: fix initial map fill
CVE-2025-38111 7.8 HIGH net/mdiobus: Fix potential out-of-bounds read/write access
CVE-2025-38116 7.8 HIGH wifi: ath12k: fix uaf in ath12k_core_init()
CVE-2025-38108 7.8 HIGH net_sched: red: fix a race in __red_change()
CVE-2025-38102 7.8 HIGH VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notify
CVE-2025-38101 7.8 HIGH ring-buffer: Fix buffer locking in ring_buffer_subbuf_order_set()
CVE-2025-38098 7.8 HIGH drm/amd/display: Don't treat wb connector as physical in create_validate_stream_for_sink
CVE-2025-38097 7.8 HIGH espintcp: remove encap socket caching to avoid reference leak
CVE-2025-38095 7.8 HIGH dma-buf: insert memory barrier before updating num_fences
CVE-2025-38106 7.8 HIGH io_uring: fix use-after-free of sq->thread in __io_uring_show_fdinfo()
CVE-2025-38115 7.8 HIGH net_sched: sch_sfq: fix a potential crash on gso_skb handling
CVE-2025-38117 7.8 HIGH Bluetooth: MGMT: Protect mgmt_pending list with its own lock
CVE-2025-38118 7.8 HIGH Bluetooth: MGMT: Fix UAF on mgmt_remove_adv_monitor_complete
CVE-2025-38127 7.8 HIGH ice: fix Tx scheduler error handling in XDP callback
CVE-2025-38129 7.8 HIGH page_pool: Fix use-after-free in page_pool_recycle_in_ring
CVE-2025-38133 7.8 HIGH iio: adc: ad4851: fix ad4858 chan pointer handling
CVE-2025-38141 7.8 HIGH dm: fix dm_blk_report_zones

Showing top 20 of 78 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38140

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