Use After Free Affecting zephyrproject-rtos/zephyr package, versions [0,4.4.2-rc1)
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-UNMANAGED-ZEPHYRPROJECTRTOSZEPHYR-17391866
- published21 Jun 2026
- disclosed16 Jun 2026
- creditUnknown
Introduced: 16 Jun 2026
CVE-2026-10635 (opens in a new tab)How to fix?
Upgrade zephyrproject-rtos/zephyr to version 4.4.2-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the arch_mem_domain_deinit process. An attacker can cause memory corruption or system instability by triggering the de-initialization of a memory domain, leading to a dangling pointer in the global xtensa_domain_list that may be dereferenced during subsequent memory mapping operations. This is only exploitable if the system is running on Xtensa targets with both CONFIG_USERSPACE and CONFIG_XTENSA_MMU enabled, and the attack path is only reachable from privileged kernel or supervisor code.