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Fencer Intel
high 7.7

CVE-2022-23090 json

AIO credential reference count leak

published 2y ago modified 4mo ago also EUVD-2022-28195

cvss
7.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

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).

Patch / fix

  • FreeBSD FreeBSD 13.0_p12, 13.1_p1, p1, p6, p12

Is CVE-2022-23090 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2y ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA 3.1 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

  • FreeBSD FreeBSD

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.