What’s Vulnerable › Vulnerabilities

CVE-2024-6443: zephyr: out-of-bound read in utf8_trunc

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-10-04 · updated 2026-06-17
• Weakness: CWE-125

Description

In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.

Affected products

• zephyrproject zephyr: through 3.6.0

References

• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-gg46-3rh2-v765

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