{"id":"CVE-2026-90192","published":"2026-09-17T17:17:13.920","lastModified":"2026-09-17T17:17:13.920","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3d11d2a6c9a10de287e0f1b53a5e65d16afe2760","tags":[]},{"url":"https://git.kernel.org/stable/c/413b0b94d6d06b8d49735280e86a01dac90cf177","tags":[]},{"url":"https://git.kernel.org/stable/c/b3d73e7440e0c40644285be1bda349cdf90122d8","tags":[]},{"url":"https://git.kernel.org/stable/c/fc4f2f99530298a1739226947aa76525142d421d","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}