Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-257
Advisory Release Date: 2026-10-28 09:00 Pacific
Advisory Updated Date: 2026-10-28 09:00 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-97380:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the GRANT PROXY statement treats an IDENTIFIED clause with an empty password as though authentication were not specified, causing it to check the wrong grantor privileges. A low-privileged attacker who can name another account can exploit this authorization error to set that account's password. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-92262:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the #mysql50# bypass prefix is affected because it allows the #mysql50# prefix to bypass normal table-name filesystem encoding. An attacker can trigger the issue with a table name using the #mysql50# prefix, then use a #mysql50# table name to access files under their legacy unencoded name and cause crashes, data corruption, data exfiltration, or remote code execution. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-86047:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, SHOW CREATE SERVER, SHOW CREATE USER, and mariadb-dump are affected because each does not consistently quote identifiers and values when serializing SQL. A low-privileged attacker can trigger the issue when an attacker-created object with crafted identifiers or values is included in SHOW output or a dump, then create an object with crafted identifiers or values so generated SQL contains injected statements and execute attacker-injected SQL when the poisoned output is applied. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-85985:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the CONNECT engine plugin file-access UDFs json_file(), bson_file(), jfile_make(), bfile_make(), and jbin_file() are affected because each does not enforce FILE privilege or the secure_file_priv setting. A low-privileged attacker can trigger the issue by calling a CONNECT file-access UDF with a filesystem path, then invoke a CONNECT file-access UDF to access a filesystem path and read or write files that the database account is not authorized to access, subject to operating-system permissions. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-85748:
A flaw was found in MariaDB. An authenticated database user with low privileges can trigger a use-after-free memory corruption condition during cursor FETCH operations involving SYS_REFCURSOR. This flaw allows an attacker to corrupt memory and hijack program execution flow, potentially leading to privilege escalation and arbitrary code execution on the host system or causing a denial of service (DoS) by crashing the database server.
CVE-2026-85746:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, ST_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-85745:
A flaw was found in MariaDB. An authenticated database user can exploit an out-of-bounds read vulnerability by supplying a specially crafted spatial geometry to the ST_Area function. This issue allows reading beyond allocated memory buffers, leading to unauthorized information disclosure of internal process memory. An attacker could use this disclosed data to facilitate further attacks, such as bypassing security protections like Address Space Layout Randomization (ASLR).
CVE-2026-107823:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the MariaDB view FRM parser did not safely encode embedded newline characters in a username. An account with CREATE USER and CREATE VIEW WITH GRANT OPTION could create a crafted username containing additional view metadata, causing the parser to interpret part of the username as security metadata and potentially escalating database privileges. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-107822:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB's ACL cache could generate the same database-privilege cache key for role and localhost user names that matched because both used an empty IP component. An attacker with CREATE USER could create the colliding principal and, when the original principal's database privileges were cached, exercise privileges assigned to the other account. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-107821:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, MariaDB insufficiently validated counts, offsets, lengths, and field boundaries in FRM metadata while opening binary FRM files. An attacker able to place a crafted FRM file in the data directory could trigger out-of-bounds reads or writes, crash the server, or potentially execute code. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-107817:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the mysql_json plugin assumed that imported MySQL tables contained valid MySQL binary JSON data. A specially prepared MySQL table containing invalid JSON data could cause out-of-bounds reads, information disclosure, or a server crash. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-107816:
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the qc_info plugin could be confused by a query containing embedded null bytes. Reading information_schema.query_cache_info after such a query was cached could access data beyond the end of a heap-allocated buffer, potentially disclosing adjacent memory or crashing the server. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-107815:
A flaw was found in MariaDB. An authenticated user with permission to use the CONNECT storage engine can exploit an incorrect boundary check when handling DOS table types to write beyond the allocated stack buffer. This flaw could lead to arbitrary code execution or cause the database server to crash, resulting in a Denial of Service (DoS).
Affected Packages:
mariadb123
Issue Correction:
Run dnf update mariadb123 or dnf update --advisory ALAS2027-2026-257 to update your system.
aarch64:
mariadb123-connect-engine-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-test-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-cracklib-password-check-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-server-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-devel-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-debugsource-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-test-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-sphinx-engine-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-oqgraph-engine-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-pam-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-sphinx-engine-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-backup-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-server-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-oqgraph-engine-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-gssapi-server-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-connect-engine-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-cracklib-password-check-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-backup-debuginfo-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-pam-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-gssapi-server-12.3.3-2.amzn2027.0.1.aarch64
mariadb123-12.3.3-2.amzn2027.0.1.aarch64
noarch:
mariadb123-common-12.3.3-2.amzn2027.0.1.noarch
mariadb123-errmsg-12.3.3-2.amzn2027.0.1.noarch
mariadb123-client-utils-12.3.3-2.amzn2027.0.1.noarch
mariadb123-server-utils-12.3.3-2.amzn2027.0.1.noarch
src:
mariadb123-12.3.3-2.amzn2027.0.1.src
x86_64:
mariadb123-rocksdb-engine-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-connect-engine-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-oqgraph-engine-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-test-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-connect-engine-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-sphinx-engine-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-devel-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-rocksdb-engine-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-cracklib-password-check-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-sphinx-engine-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-pam-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-backup-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-backup-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-gssapi-server-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-cracklib-password-check-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-gssapi-server-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-pam-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-server-debuginfo-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-oqgraph-engine-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-server-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-debugsource-12.3.3-2.amzn2027.0.1.x86_64
mariadb123-test-12.3.3-2.amzn2027.0.1.x86_64