CVE-2023-21255: Use After Free
In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1 - Upgrade
Upgrade
android/:linux_kernel:to a version that resolves this vulnerability.Fixed in :2023-07-05
Event History
Frequently Asked Questions
What is the severity of CVE-2023-21255?
CVE-2023-21255 has a high severity level due to its potential for local escalation of privileges.
How do I fix CVE-2023-21255?
To fix CVE-2023-21255, update to the patched versions of the linux package: 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.13-1.
What systems are affected by CVE-2023-21255?
CVE-2023-21255 affects Google Android and specific versions of Debian GNU/Linux, notably versions 10.0 and 11.0.
Is user interaction required to exploit CVE-2023-21255?
No, user interaction is not needed for the exploitation of CVE-2023-21255, making it more severe.
What kind of vulnerability is CVE-2023-21255?
CVE-2023-21255 is a memory corruption vulnerability resulting from a use after free issue.