CVE-2025-38090
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…
Does this matter?
Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.17% probability · 6th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1921781ec4a8824bd0c520bf9363e28a880d14ecPatch
- https://git.kernel.org/stable/c/1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53Patch
- https://git.kernel.org/stable/c/50695153d7ddde3b1696dbf0085be0033bf3ddb3Patch
- https://git.kernel.org/stable/c/58f664614f8c3d6142ab81ae551e466dc6e092e8Patch
- https://git.kernel.org/stable/c/6d5c6711a55c35ce09b90705546050408d9d4b61Patch
- https://git.kernel.org/stable/c/a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6Patch
- https://git.kernel.org/stable/c/c03ddc183249f03fc7e057e02cae6f89144d0123Patch
- https://git.kernel.org/stable/c/ecf5ee280b702270afb02f61b299d3dfe3ec7730Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.