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CVE-2025-38393— NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN

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NFS_LAYOUT_DRAIN存在竞争条件可能导致挂起。

CVSS 7.5 · High EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1571 · Non-Standard Port

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 8acc3e228e1c90bd410f73597a4549e0409f22d6< 08287df60bac5b008b6bcdb03053988335d3d282 affected
ec23a86e060cbe30b62eb2955adc97c92d80cc4c< 8846fd02c98da8b79e6343a20e6071be6f372180 affected
880265c77ac415090090d1fe72a188fee71cb458< e4b13885e7ef1e64e45268feef1e5f0707c47e72 affected
880265c77ac415090090d1fe72a188fee71cb458< 8ca65fa71024a1767a59ffbc6a6e2278af84735e affected
880265c77ac415090090d1fe72a188fee71cb458< 864a54c1243ed3ca60baa4bc492dede1361f4c83 affected
880265c77ac415090090d1fe72a188fee71cb458< 1f4da20080718f258e189a2c5f515385fa393da6 affected
880265c77ac415090090d1fe72a188fee71cb458< c01776287414ca43412d1319d2877cbad65444ac affected
f133819e24e78f3aaaa00e9fa2b816d5f73fd172 affected
… +12 more rows
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I. Basic Information for CVE-2025-38393

Vulnerability Information
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Vulnerability Title
NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN We found a few different systems hung up in writeback waiting on the same page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in pnfs_update_layout(), however the pnfs_layout_hdr's plh_outstanding count was zero. It seems most likely that this is another race between the waiter and waker similar to commit ed0172af5d6f ("SUNRPC: Fix a race to wake a sync task"). Fix it up by applying the advised barrier.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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NFS_LAYOUT_DRAIN存在竞争条件可能导致挂起。
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 8acc3e228e1c90bd410f73597a4549e0409f22d6 ~ 08287df60bac5b008b6bcdb03053988335d3d282 -
Linux Linux 5.19 -

II. Public POCs for CVE-2025-38393

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III. Intelligence Information for CVE-2025-38393

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Same Patch Batch · Linux · 2025-07-25 · 114 CVEs total

CVE-2025-38429 10.0 CRITICAL bus: mhi: ep: Update read pointer only after buffer is written
CVE-2025-38411 9.8 CRITICAL netfs: Fix double put of request
CVE-2025-38430 9.8 CRITICAL nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request
CVE-2025-38439 9.8 CRITICAL bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT
CVE-2025-38365 9.1 CRITICAL btrfs: fix a race between renames and directory logging
CVE-2025-38437 8.8 HIGH ksmbd: fix potential use-after-free in oplock/lease break ack
CVE-2025-38377 8.8 HIGH rose: fix dangling neighbour pointers in rose_rt_device_down()
CVE-2025-38367 8.8 HIGH LoongArch: KVM: Avoid overflow with array index
CVE-2025-38395 8.4 HIGH regulator: gpio: Fix the out-of-bounds access to drvdata::gpiods
CVE-2025-38375 8.4 HIGH virtio-net: ensure the received length does not exceed allocated size
CVE-2025-38434 7.8 HIGH Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
CVE-2025-38398 7.8 HIGH spi: spi-qpic-snand: reallocate BAM transactions
CVE-2025-38449 7.8 HIGH drm/gem: Acquire references on GEM handles for framebuffers
CVE-2025-38382 7.8 HIGH btrfs: fix iteration of extrefs during log replay
CVE-2025-38412 7.8 HIGH platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks
CVE-2025-38447 7.8 HIGH mm/rmap: fix potential out-of-bounds page table access during batched unmap
CVE-2025-38440 7.8 HIGH net/mlx5e: Fix race between DIM disable and net_dim()
CVE-2025-38408 7.8 HIGH genirq/irq_sim: Initialize work context pointers properly
CVE-2025-38422 7.8 HIGH net: lan743x: Modify the EEPROM and OTP size for PCI1xxxx devices
CVE-2025-38396 7.8 HIGH fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass

Showing top 20 of 114 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38393

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