{"id":"AZL-64401","summary":"CVE-2025-38090 affecting package kernel for versions less than 6.6.96.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/rapidio/rio_cm.c: prevent possible heap overwrite\n\nIn\n\nriocm_cdev_ioctl(RIO_CM_CHAN_SEND)\n   -\u003e cm_chan_msg_send()\n      -\u003e riocm_ch_send()\n\ncm_chan_msg_send() checks that userspace didn't send too much data but\nriocm_ch_send() failed to check that userspace sent sufficient data.  The\nresult is that riocm_ch_send() can write to fields in the rio_ch_chan_hdr\nwhich were outside the bounds of the space which cm_chan_msg_send()\nallocated.\n\nAddress this by teaching riocm_ch_send() to check that the entire\nrio_ch_chan_hdr was copied in from userspace.","modified":"2026-04-21T04:32:23.969579Z","published":"2025-06-30T08:15:23Z","upstream":["CVE-2025-38090"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38090"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.96.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-64401.json"}}],"schema_version":"1.7.5"}