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CVE-2026-90192

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Last modified

CVE-2026-90192 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in send_data callback mailbox_clear_channel() calls mbox_send_message() with NULL data to notify the remote side that the RX channel has been cleared. qcom_cpucp_mbox_send_data() blindly dereferenced the data pointer, causing a NULL pointer dereference kernel panic when invoked from this path under PREEMPT_RT. Add an explicit NULL check and return early without writing to the TX register, which is the correct behaviour for a channel-clear notification..

Description

In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in send_data callback mailbox_clear_channel() calls mbox_send_message() with NULL data to notify the remote side that the RX channel has been cleared. qcom_cpucp_mbox_send_data() blindly dereferenced the data pointer, causing a NULL pointer dereference kernel panic when invoked from this path under PREEMPT_RT. Add an explicit NULL check and return early without writing to the TX register, which is the correct behaviour for a channel-clear notification.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669, < 3d11d2a6c9a10de287e0f1b53a5e65d16afe2760; >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669, < 413b0b94d6d06b8d49735280e86a01dac90cf177; >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669, < b3d73e7440e0c40644285be1bda349cdf90122d8; >= 0e2a9a03106cd5fa0dbc9047675e7645c55e2669, < fc4f2f99530298a1739226947aa76525142d421d
LinuxLinux6.11

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90192?
In the Linux kernel, the following vulnerability has been resolved: mailbox: qcom-cpucp: handle NULL data in send_data callback mailbox_clear_channel() calls mbox_send_message() with NULL data to notify the remote side that the RX channel has been cleared. qcom_cpucp_mbox_send_data() blindly dereferenced the data pointer, causing a NULL pointer dereference kernel panic when invoked from this path under PREEMPT_RT. Add an explicit NULL check and return early without writing to the TX register, which is the correct behaviour for a channel-clear notification.
How severe is CVE-2026-90192?
Severity scoring for CVE-2026-90192 is pending analysis.
How do I fix CVE-2026-90192?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST