{"id":"CVE-2026-90192","summary":"mailbox: qcom-cpucp: handle NULL data in send_data callback","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: qcom-cpucp: handle NULL data in send_data callback\n\nmailbox_clear_channel() calls mbox_send_message() with NULL data to\nnotify the remote side that the RX channel has been cleared.\nqcom_cpucp_mbox_send_data() blindly dereferenced the data pointer,\ncausing a NULL pointer dereference kernel panic when invoked from\nthis path under PREEMPT_RT.\n\nAdd an explicit NULL check and return early without writing to the\nTX register, which is the correct behaviour for a channel-clear\nnotification.","modified":"2026-09-19T03:47:25.144212079Z","published":"2026-09-17T16:07:12.995Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90192.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3d11d2a6c9a10de287e0f1b53a5e65d16afe2760"},{"type":"WEB","url":"https://git.kernel.org/stable/c/413b0b94d6d06b8d49735280e86a01dac90cf177"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b3d73e7440e0c40644285be1bda349cdf90122d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc4f2f99530298a1739226947aa76525142d421d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90192.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90192"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0e2a9a03106cd5fa0dbc9047675e7645c55e2669"},{"fixed":"3d11d2a6c9a10de287e0f1b53a5e65d16afe2760"},{"fixed":"413b0b94d6d06b8d49735280e86a01dac90cf177"},{"fixed":"b3d73e7440e0c40644285be1bda349cdf90122d8"},{"fixed":"fc4f2f99530298a1739226947aa76525142d421d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90192.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.11.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90192.json"}}],"schema_version":"1.9.0"}