CVE-2023-21255

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-13 · updated 2026-06-17
Weakness: CWE-416

Description

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 products

Debian Linux: 10.0, 11.0
Android: all versions

References

https://android.googlesource.com/kernel/common/+/1ca1130ec62d
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://security.netapp.com/advisory/ntap-20240119-0010/
https://source.android.com/security/bulletin/2023-07-01
https://www.debian.org/security/2023/dsa-5480
https://android.googlesource.com/kernel/common/+/1ca1130ec62d
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://security.netapp.com/advisory/ntap-20240119-0010/
https://source.android.com/security/bulletin/2023-07-01
https://www.debian.org/security/2023/dsa-5480

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