Vulnerability details
Advisory: SB2021110302 - Privilege escalation in Google Android
Vulnerable component: Google Android
CVE-ID: CVE-2021-1048
CVSSv3 score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-416 - Use After Free
Description:
The vulnerability allows a malicious application to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Android kernel component within the epoll_loop_check_proc() function. A malicious application can trigger a use-after-free error and execute arbitrary code with kernel privileges.
Note, the vulnerability is being actively exploited in the wild.
External links:
https://source.android.com/security/bulletin/2021-11-01#2021-11-06-security-patch-level-vulnerability-details