CVE-2026-90192mailbox: qcom-cpucp: handle NULL data in send_data callback
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 before 3d11d2a6c9a10de287e0f1b53a5e65d16afe2760; from 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 before 413b0b94d6d06b8d49735280e86a01dac90cf177; from 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 before b3d73e7440e0c40644285be1bda349cdf90122d8; from 0e2a9a03106cd5fa0dbc9047675e7645c55e2669 before fc4f2f99530298a1739226947aa76525142d421d | CNA record |
References
- https://git.kernel.org/stable/c/3d11d2a6c9a10de287e0f1b53a5e65d16afe2760
- https://git.kernel.org/stable/c/413b0b94d6d06b8d49735280e86a01dac90cf177
- https://git.kernel.org/stable/c/b3d73e7440e0c40644285be1bda349cdf90122d8
- https://git.kernel.org/stable/c/fc4f2f99530298a1739226947aa76525142d421d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.