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CVE-2025-38539— tracing: Add down_write(trace_event_sem) when adding trace event

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，该漏洞源于添加跟踪事件时未获取写锁，可能导致列表损坏。

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1204.002 · Malicious File

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 110bf2b764eb6026b868d84499263cb24b1bcc8d< e70f5ee4c8824736332351b703c46f9469ed7f6c affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< db45632479ceecb669612ed8dbce927e3c6279fc affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< ca60064ea03f14e06c763de018403cb56ba3207d affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< 7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< 6bc94f20a4c304997288f9a45278c9d0c06987d3 affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< 33e20747b47ddc03569b6bc27a2d6894c1428182 affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< 70fecd519caad0c1741c3379d5348c9000a5b29d affected
110bf2b764eb6026b868d84499263cb24b1bcc8d< b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df affected
… +10 more rows
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I. Basic Information for CVE-2025-38539

Vulnerability Information
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Vulnerability Title
tracing: Add down_write(trace_event_sem) when adding trace event
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tracing: Add down_write(trace_event_sem) when adding trace event When a module is loaded, it adds trace events defined by the module. It may also need to modify the modules trace printk formats to replace enum names with their values. If two modules are loaded at the same time, the adding of the event to the ftrace_events list can corrupt the walking of the list in the code that is modifying the printk format strings and crash the kernel. The addition of the event should take the trace_event_sem for write while it adds the new event. Also add a lockdep_assert_held() on that semaphore in __trace_add_event_dirs() as it iterates the list.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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，该漏洞源于添加跟踪事件时未获取写锁，可能导致列表损坏。
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 110bf2b764eb6026b868d84499263cb24b1bcc8d ~ e70f5ee4c8824736332351b703c46f9469ed7f6c -
Linux Linux 2.6.31 -

II. Public POCs for CVE-2025-38539

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III. Intelligence Information for CVE-2025-38539

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Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total

CVE-2025-38533 9.8 CRITICAL net: libwx: fix the using of Rx buffer DMA
CVE-2025-38527 9.8 CRITICAL smb: client: fix use-after-free in cifs_oplock_break
CVE-2025-38552 9.4 CRITICAL mptcp: plug races between subflow fail and subflow creation
CVE-2023-3867 9.1 CRITICAL ksmbd: fix out of bounds read in smb2_sess_setup
CVE-2023-4515 9.1 CRITICAL ksmbd: validate command request size
CVE-2023-32249 9.1 CRITICAL ksmbd: not allow guest user on multichannel
CVE-2025-38512 8.8 HIGH wifi: prevent A-MSDU attacks in mesh networks
CVE-2025-38511 8.8 HIGH drm/xe/pf: Clear all LMTT pages on alloc
CVE-2023-4130 8.1 HIGH ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
CVE-2023-3865 8.1 HIGH ksmbd: fix out-of-bound read in smb2_write
CVE-2025-38536 7.8 HIGH net: airoha: fix potential use-after-free in airoha_npu_get()
CVE-2025-38550 7.8 HIGH ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
CVE-2025-38542 7.8 HIGH net: appletalk: Fix device refcount leak in atrtr_create()
CVE-2025-38532 7.8 HIGH net: libwx: properly reset Rx ring descriptor
CVE-2025-38502 7.8 HIGH bpf: Fix oob access in cgroup local storage
CVE-2025-38523 7.5 HIGH cifs: Fix the smbd_response slab to allow usercopy
CVE-2025-38501 7.5 HIGH ksmbd: limit repeated connections from clients with the same IP
CVE-2025-38514 7.5 HIGH rxrpc: Fix oops due to non-existence of prealloc backlog struct
CVE-2025-38525 7.5 HIGH rxrpc: Fix irq-disabled in local_bh_enable()
CVE-2025-38524 7.5 HIGH rxrpc: Fix recv-recv race of completed call

Showing top 20 of 59 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38539

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