CVE-2026-90192 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20507232
- published5 Oct 2026
- disclosed17 Sept 2026
Introduced: 17 Sep 2026
NewCVE-2026-90192 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-90192
- 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