CVE-2026-35549 Details
Description
An issue was discovered in MariaDB Server before 11.4.10, 11.5.x through 11.8.x before 11.8.6, and 12.x before 12.2.2. If the caching_sha2_password authentication plugin is installed, and some user accounts are configured to use it, a large packet can crash the server because sha256_crypt_r uses alloca.
A denial-of-service vulnerability has been identified in MariaDB Server versions prior to 11.4.10, 11.5.x through 11.8.x prior to 11.8.6, and 12.x prior to 12.2.2. When the caching_sha2_password authentication plugin is active and certain user accounts are configured to use it, the server can crash if a large packet is received. This occurs because the sha256_crypt_r function, which handles the authentication, uses alloca to manage the packet size. If the packet is too large, it can deplete the stack resources and cause the server to crash.
Users can upgrade to MariaDB Server versions 11.4.10, 11.8.6, or 12.2.2 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://jira.mariadb.org/browse/MDEV-38365 | [email protected] | Issue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-789 | Memory Allocation with Excessive Size Value | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mariadb mariadb | < 11.4.10 >= 11.5.0, < 11.8.6 >= 12.0.0, < 12.2.2 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 2, 2026 | Initial Analysis | [email protected] |
| Apr 3, 2026 | New CVE Received | [email protected] |