Userspace privilege escalation vulnerability on Cortex M
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
System call entry on Cortex M (and possibly R and A, but I think not) has a race which allows very practical privilege escalation for malicious userspace processes.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
zephyrproject-rtos · Zephyr