Linux Kernel UAF via lio_listio aio_aqueue Refcnt Overflow
CVE-2022-23090 Published on February 15, 2024
AIO credential reference count leak
The aio_aqueue function, used by the lio_listio system call, fails to release a reference to a credential in an error case.
An attacker may cause the reference count to overflow, leading to a use after free (UAF).
Vulnerability Analysis
CVE-2022-23090 is exploitable with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2022-23090 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2022-23090
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Affected Versions
FreeBSD:- Version 13.1-RELEASE and below p1 is affected.
- Version 13.0-RELEASE and below p12 is affected.
- Version 12.3-RELEASE and below p6 is affected.
- Version 13.0 and below 13.0_p12 is affected.
- Version 13.1 and below 13.1_p1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.