CVE-2025-38090
Published: July 1, 2025Last modified: July 1, 2025
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.143-r1) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
References
- https://git.kernel.org/stable/c/1921781ec4a8824bd0c520bf9363e28a880d14ec
- https://git.kernel.org/stable/c/1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53
- https://git.kernel.org/stable/c/50695153d7ddde3b1696dbf0085be0033bf3ddb3
- https://git.kernel.org/stable/c/58f664614f8c3d6142ab81ae551e466dc6e092e8
- https://git.kernel.org/stable/c/6d5c6711a55c35ce09b90705546050408d9d4b61
- https://git.kernel.org/stable/c/a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6
- https://git.kernel.org/stable/c/c03ddc183249f03fc7e057e02cae6f89144d0123
- https://git.kernel.org/stable/c/ecf5ee280b702270afb02f61b299d3dfe3ec7730
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html