Use After Free in Mariadb

CVE-2022-27456

MariaDB Server v10.6.3 and below was discovered to contain an use-after-free in the component VDec::VDec at /sql/sql_type.cc.

Vulnerability class: Use-After-Free

EPSS: 0.021 (80.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mariadb
Debian Debian_linux — versions 10.0
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2022-27456?: CVE-2022-27456 is a high-severity vulnerability in Mariadb, classified under Use After Free. CVSS score: 7.5/10. Published 2022-04-14.
How severe is CVE-2022-27456?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-27456 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.