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CVE-2025-38090— drivers/rapidio/rio_cm.c: prevent possible heap overwrite

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rio_cm.c中未检查用户空间数据大小，可能导致堆溢出。

CVSS 7.8 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux b6e8d4aa1110306378af0f3472a6b85a1f039a16< a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6 affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< c03ddc183249f03fc7e057e02cae6f89144d0123 affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< 58f664614f8c3d6142ab81ae551e466dc6e092e8 affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< ecf5ee280b702270afb02f61b299d3dfe3ec7730 affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< 1921781ec4a8824bd0c520bf9363e28a880d14ec affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< 1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53 affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< 6d5c6711a55c35ce09b90705546050408d9d4b61 affected
b6e8d4aa1110306378af0f3472a6b85a1f039a16< 50695153d7ddde3b1696dbf0085be0033bf3ddb3 affected
… +10 more rows
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I. Basic Information for CVE-2025-38090

Vulnerability Information
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Vulnerability Title
drivers/rapidio/rio_cm.c: prevent possible heap overwrite
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drivers/rapidio/rio_cm.c: prevent possible heap overwrite In riocm_cdev_ioctl(RIO_CM_CHAN_SEND) -> cm_chan_msg_send() -> riocm_ch_send() cm_chan_msg_send() checks that userspace didn't send too much data but riocm_ch_send() failed to check that userspace sent sufficient data. The result is that riocm_ch_send() can write to fields in the rio_ch_chan_hdr which were outside the bounds of the space which cm_chan_msg_send() allocated. Address this by teaching riocm_ch_send() to check that the entire rio_ch_chan_hdr was copied in from userspace.
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rio_cm.c中未检查用户空间数据大小，可能导致堆溢出。
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 b6e8d4aa1110306378af0f3472a6b85a1f039a16 ~ a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6 -
Linux Linux 4.8 -

II. Public POCs for CVE-2025-38090

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III. Intelligence Information for CVE-2025-38090

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Patches & Fixes for CVE-2025-38090 (1)

Same Patch Batch · Linux · 2025-06-30 · 4 CVEs total

CVE-2025-38089 9.8 CRITICAL sunrpc: handle SVC_GARBAGE during svc auth processing as auth error
CVE-2025-38087 7.8 HIGH net/sched: fix use-after-free in taprio_dev_notifier
CVE-2025-38088 powerpc/powernv/memtrace: Fix out of bounds issue in memtrace mmap

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38090

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