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.
Product status
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before c03ddc183249f03fc7e057e02cae6f89144d0123
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before 58f664614f8c3d6142ab81ae551e466dc6e092e8
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before ecf5ee280b702270afb02f61b299d3dfe3ec7730
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before 1921781ec4a8824bd0c520bf9363e28a880d14ec
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before 1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before 6d5c6711a55c35ce09b90705546050408d9d4b61
b6e8d4aa1110306378af0f3472a6b85a1f039a16 (git) before 50695153d7ddde3b1696dbf0085be0033bf3ddb3
4.8
Any version before 4.8
5.4.295 (semver)
5.10.239 (semver)
5.15.186 (semver)
6.1.142 (semver)
6.6.95 (semver)
6.12.35 (semver)
6.15.4 (semver)
6.16 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/10/msg00008.html
lists.debian.org/debian-lts-announce/2025/10/msg00007.html
git.kernel.org/...c/a8b5ea2e302aa5cd00fc7addd8df53c9bde7b5f6
git.kernel.org/...c/c03ddc183249f03fc7e057e02cae6f89144d0123
git.kernel.org/...c/58f664614f8c3d6142ab81ae551e466dc6e092e8
git.kernel.org/...c/ecf5ee280b702270afb02f61b299d3dfe3ec7730
git.kernel.org/...c/1921781ec4a8824bd0c520bf9363e28a880d14ec
git.kernel.org/...c/1cce6ac47f4a2ac1766b8a188dc8c8f6d8df2a53
git.kernel.org/...c/6d5c6711a55c35ce09b90705546050408d9d4b61
git.kernel.org/...c/50695153d7ddde3b1696dbf0085be0033bf3ddb3