CVE-2023-21255: Use After Free
First published: Wed Jul 05 2023(Updated: )
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.
Credit: security@android.com security@android.com security@android.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Android | ||
| Android | ||
| Debian Linux | =10.0 | |
| Debian Linux | =11.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.25-1 |
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Reference Links
- https://android.googlesource.com/kernel/common/+/1ca1130ec62d
- https://source.android.com/security/bulletin/2023-07-01
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://www.debian.org/security/2023/dsa-5480
- https://security.netapp.com/advisory/ntap-20240119-0010/
- https://launchpad.net/bugs/cve/CVE-2023-21255
- https://source.android.com/docs/security/bulletin/2023-07-01 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21255
- https://nvd.nist.gov/vuln/detail/CVE-2023-21255
- https://security-tracker.debian.org/tracker/CVE-2023-21255
- https://ubuntu.com/security/CVE-2023-21255
- https://git.kernel.org/linus/bdc1c5fac982845a58d28690cdb56db8c88a530d
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.
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