CVE-2022-38791

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-08-27 · updated 2026-06-17
Weakness: CWE-667

Description

In MariaDB before 10.9.2, compress_write in extra/mariabackup/ds_compress.cc does not release data_mutex upon a stream write failure, which allows local users to trigger a deadlock.

Affected products

Fedoraproject Fedora: 35, 36, 37
MariaDB: from 10.3.0 before 10.3.36; from 10.4.0 before 10.4.26; from 10.5.0 before 10.5.17; from 10.6.0 before 10.6.9; from 10.7.0 before 10.7.5; from 10.8.0 before 10.8.4 — fixed in 10.3.36, 10.4.26, 10.5.17, 10.6.9, 10.7.5, 10.8.4

How to fix

Upgrade to a fixed version: MariaDB 10.3.36, 10.4.26, 10.5.17, 10.6.9. Check the vendor advisory for mitigations.

References

https://jira.mariadb.org/browse/MDEV-28719
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCOEGSVMIEXDZHBOSV6WVF7FAVRBR2JE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTVAONAZXJFGHAJ4RP2OF3EAMQCOTDSQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHISY4YVO4S5QJYYIXCIAXBM7INOL4VY/
https://security.netapp.com/advisory/ntap-20221104-0008/
https://jira.mariadb.org/browse/MDEV-28719
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WCOEGSVMIEXDZHBOSV6WVF7FAVRBR2JE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WTVAONAZXJFGHAJ4RP2OF3EAMQCOTDSQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHISY4YVO4S5QJYYIXCIAXBM7INOL4VY/
https://security.netapp.com/advisory/ntap-20221104-0008/

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