MySQL 5.1 before 5.1.51 and 5.5 before 5.5.6 allows remote
authenticated users to cause a denial of service (mysqld server crash)
by performing a user-variable assignment in a logical expression that
is calculated and stored in a temporary table for GROUP BY, then
causing the expression value to be used after the table is created,
which causes the expression to be re-evaluated instead of accessing
its value from the table.
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the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
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