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CVE-2025-39743— jfs: truncate good inode pages when hard link is 0

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，该漏洞源于硬链接数为0时未截断inode页面，可能导致触发bugon。

AI Predicted 4.9 Difficulty: Hard EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 32983696a48a6c41d99f3eca82ba7510a552d843< 89fff8e3d6710fc32507b8e19eb5afa9fb79b896 affected
32983696a48a6c41d99f3eca82ba7510a552d843< 5845b926c561b8333cd65169526eec357d7bb449 affected
32983696a48a6c41d99f3eca82ba7510a552d843< 8ed7275910fb7177012619864e04d3008763f3ea affected
32983696a48a6c41d99f3eca82ba7510a552d843< b5b471820c33365a8ccd2d463578bf4e47056c2c affected
32983696a48a6c41d99f3eca82ba7510a552d843< 34d8e982bac48bdcca7524644a8825a580edce74 affected
32983696a48a6c41d99f3eca82ba7510a552d843< df3fd8daf278eca365f221749ae5b728e8382a04 affected
32983696a48a6c41d99f3eca82ba7510a552d843< 2b1d5ca395a5fb170c3f885cd42c16179f7f54ec affected
32983696a48a6c41d99f3eca82ba7510a552d843< 1bb5cdc3e39f0c2b311fcb631258b7e60d3fb0d3 affected
… +12 more rows
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I. Basic Information for CVE-2025-39743

Vulnerability Information
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Vulnerability Title
jfs: truncate good inode pages when hard link is 0
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: jfs: truncate good inode pages when hard link is 0 The fileset value of the inode copy from the disk by the reproducer is AGGR_RESERVED_I. When executing evict, its hard link number is 0, so its inode pages are not truncated. This causes the bugon to be triggered when executing clear_inode() because nrpages is greater than 0.
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，该漏洞源于硬链接数为0时未截断inode页面，可能导致触发bugon。
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 32983696a48a6c41d99f3eca82ba7510a552d843 ~ 89fff8e3d6710fc32507b8e19eb5afa9fb79b896 -
Linux Linux 2.6.14 -

II. Public POCs for CVE-2025-39743

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III. Intelligence Information for CVE-2025-39743

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Same Patch Batch · Linux · 2025-09-11 · 54 CVEs total

CVE-2025-39758 9.8 CRITICAL RDMA/siw: Fix the sendmsg byte count in siw_tcp_sendpages
CVE-2025-39761 8.8 HIGH wifi: ath12k: Decrement TID on RX peer frag setup error handling
CVE-2025-39750 8.8 HIGH wifi: ath12k: Correct tid cleanup when tid setup fails
CVE-2025-39790 8.4 HIGH bus: mhi: host: Detect events pointing to unexpected TREs
CVE-2025-39779 7.8 HIGH btrfs: subpage: keep TOWRITE tag until folio is cleaned
CVE-2025-39791 7.8 HIGH dm: dm-crypt: Do not partially accept write BIOs with zoned targets
CVE-2025-39780 7.8 HIGH sched/ext: Fix invalid task state transitions on class switch
CVE-2025-39785 7.8 HIGH drm/hisilicon/hibmc: fix irq_request()'s irq name variable is local
CVE-2025-39786 7.8 HIGH iio: adc: ad7173: fix channels index for syscalib_mode
CVE-2025-39787 7.8 HIGH soc: qcom: mdt_loader: Ensure we don't read past the ELF header
CVE-2025-39740 7.8 HIGH drm/xe/migrate: prevent potential UAF
CVE-2025-39770 7.5 HIGH net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6_CSUM
CVE-2025-39738 7.3 HIGH btrfs: do not allow relocation of partially dropped subvolumes
CVE-2025-39789 7.3 HIGH crypto: x86/aegis - Add missing error checks
CVE-2025-39776 7.0 HIGH mm/debug_vm_pgtable: clear page table entries at destroy_args()
CVE-2025-39764 netfilter: ctnetlink: remove refcounting in expectation dumpers
CVE-2025-39768 net/mlx5: HWS, fix complex rules rehash error flow
CVE-2025-39773 net: bridge: fix soft lockup in br_multicast_query_expired()
CVE-2025-39772 drm/hisilicon/hibmc: fix the hibmc loaded failed bug
CVE-2025-39769 bnxt_en: Fix lockdep warning during rmmod

Showing top 20 of 54 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39743

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