Out-of-bounds Write Affecting zephyrproject-rtos/zephyr package, versions [,4.3.1-rc1)[4.4.0-rc1,4.4.0-rc2)
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-17391888
- published21 Jun 2026
- disclosed9 Jun 2026
- credit1seal
Introduced: 9 Jun 2026
CVE-2026-5068 (opens in a new tab)How to fix?
Upgrade zephyrproject-rtos/zephyr to version 4.3.1-rc1, 4.4.0-rc2 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write in the l2cap_chan_le_recv_seg process when segmentation is enabled and the selected RX pool has a user_data_size smaller than 2 bytes. An attacker can cause heap corruption or a fatal error by sending specially crafted Bluetooth L2CAP LE CoC packets that trigger a 2-byte out-of-bounds write during SDU reassembly.