{"id":"CVE-2026-90192","title":"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 chan…","summary":"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 chan…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 < 3d11d2a6c9a10de287e0f1b53a5e65d16afe2760","Linux >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 < 413b0b94d6d06b8d49735280e86a01dac90cf177","Linux >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 < b3d73e7440e0c40644285be1bda349cdf90122d8","Linux >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 < fc4f2f99530298a1739226947aa76525142d421d","Linux 6.11"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:13.920","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90192","references":[{"url":"https://git.kernel.org/stable/c/3d11d2a6c9a10de287e0f1b53a5e65d16afe2760","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/413b0b94d6d06b8d49735280e86a01dac90cf177","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b3d73e7440e0c40644285be1bda349cdf90122d8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc4f2f99530298a1739226947aa76525142d421d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.863Z","epss":0.002,"epssPercentile":0.10166,"slug":"CVE-2026-90192","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}