CVE-2025-38090

drivers/rapidio/rio_cm.c: prevent possible heap overwrite

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6
https://git.kernel.org/stable/c/c03ddc183249f03fc7e057e02cae6f89144d0123
https://git.kernel.org/stable/c/58f664614f8c3d6142ab81ae551e466dc6e092e8
https://git.kernel.org/stable/c/ecf5ee280b702270afb02f61b299d3dfe3ec7730
https://git.kernel.org/stable/c/1921781ec4a8824bd0c520bf9363e28a880d14ec
https://git.kernel.org/stable/c/1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53
https://git.kernel.org/stable/c/6d5c6711a55c35ce09b90705546050408d9d4b61
https://git.kernel.org/stable/c/50695153d7ddde3b1696dbf0085be0033bf3ddb3

Frequently Asked Questions

What is the severity of CVE-2025-38090?: CVE-2025-38090 has not yet been assigned a CVSS score.
How to fix CVE-2025-38090?: To fix CVE-2025-38090, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38090 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38090 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38090?: CVE-2025-38090 affects Linux Linux, Linux Linux.

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