CVE-2023-21400

Public Exploit

Description

In multiple functions of io_uring.c, there is a possible kernel memory corruption due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory android.com
Affected: Google Android
Published at:
Updated at:

References

Link Tags
https://source.android.com/security/bulletin/pixel/2023-07-01 vendor advisory
http://www.openwall.com/lists/oss-security/2023/07/14/2 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2023/07/19/2 mailing list third party advisory exploit
http://www.openwall.com/lists/oss-security/2023/07/19/7 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2023/07/25/7 mailing list
https://www.debian.org/security/2023/dsa-5480 third party advisory
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html third party advisory vdb entry
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html third party advisory mailing list
https://security.netapp.com/advisory/ntap-20240119-0012/

Frequently Asked Questions

What is the severity of CVE-2023-21400?
CVE-2023-21400 has been scored as a medium severity vulnerability.
How to fix CVE-2023-21400?
To fix CVE-2023-21400, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-21400 being actively exploited in the wild?
It is possible that CVE-2023-21400 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-21400?
CVE-2023-21400 affects Google Android.
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