Use After Free in Google Android
CVE-2023-21255
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000
Affected products
- Google Android — versions Android kernel
- Debian Linux — versions 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- android.googlesource.com/kernel/common/+/1ca1130ec62d (Patch)
- source.android.com/security/bulletin/2023-07-01 (Patch, Vendor Advisory)
- www.debian.org/security/2023/dsa-5480 (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/10/msg00027.html (Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20240119-0010/
Frequently asked questions
- What is CVE-2023-21255?
- CVE-2023-21255 is a high-severity vulnerability in Google Android, classified under Use After Free. CVSS score: 7.8/10. Published 2023-07-13.
- How severe is CVE-2023-21255?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-21255 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.