Package: release.debian.org Severity: normal Tags: trixie X-Debbugs-Cc: [email protected] Control: affects -1 + src:unixodbc User: [email protected] Usertags: pu
[ Reason ] odbcinst2 is leaking memory. After a dlclose(), libodbcinst2 still has a dynamically allocated ini cache and memory allocation for the odbcinst logger. [ Impact ] The leak occurs on all systems with ini-caching enabled at build time, which is all Debian systems. Broadly, the bug is impacting MariaDB ODBC connector. MariaDB developers reported the bug to the upstream unixODBC. [ Tests ] See, for example, https://jira.mariadb.org/browse/MDEV-38838. [ Risks ] Memory leaks remain and impact systems using MariaDB and other databases with unixODBC. [ Checklist ] [x] *all* changes are documented in the d/changelog [x] I reviewed all changes and I approve them [x] attach debdiff against the package in (old)stable [x] the issue is verified as fixed in unstable [ Changes ] The upstream patch declares the relevant destructor at compile time, adds inst_logClose() to close and clear ODBCINSTLog, and calls inst_logClose() and __clear_ini_cache() on shared library closure. This version also introduces a new symbol, inst_logClose, which is fine. [ Other info ] Upstream MariaDB is requesting an upload to Debian stable, which I support (see #1141600).
diff -Nru unixodbc-2.3.12/debian/changelog unixodbc-2.3.12/debian/changelog --- unixodbc-2.3.12/debian/changelog 2024-12-17 22:34:56.000000000 +1100 +++ unixodbc-2.3.12/debian/changelog 2026-07-07 22:00:05.000000000 +1000 @@ -1,3 +1,11 @@ +unixodbc (2.3.12-2+deb13u1) trixie; urgency=medium + + * debian/libodbcinst2.symbols: Add inst_logClose@Base. + * debian/patches: Clear cached allocations on dlclose() in libodbcinst2 + (Closes: #1136221). + + -- Hugh McMaster <[email protected]> Tue, 07 Jul 2026 22:00:05 +1000 + unixodbc (2.3.12-2) unstable; urgency=medium * debian/control: diff -Nru unixodbc-2.3.12/debian/libodbcinst2.symbols unixodbc-2.3.12/debian/libodbcinst2.symbols --- unixodbc-2.3.12/debian/libodbcinst2.symbols 2024-12-16 18:32:11.000000000 +1100 +++ unixodbc-2.3.12/debian/libodbcinst2.symbols 2026-07-07 21:59:05.000000000 +1000 @@ -81,6 +81,7 @@ iniPropertyNext@Base 2.3.1 iniToUpper@Base 2.3.1 iniValue@Base 2.3.1 + inst_logClose@Base 2.3.12 inst_logPushMsg@Base 2.3.1 odbcinst_system_file_name@Base 2.3.1 odbcinst_system_file_path@Base 2.3.1 diff -Nru unixodbc-2.3.12/debian/patches/1136221.patch unixodbc-2.3.12/debian/patches/1136221.patch --- unixodbc-2.3.12/debian/patches/1136221.patch 1970-01-01 10:00:00.000000000 +1000 +++ unixodbc-2.3.12/debian/patches/1136221.patch 2026-07-07 21:59:05.000000000 +1000 @@ -0,0 +1,76 @@ +Description: Clear cached allocations on dlclose() in libodbcinst2 + * Declare destructors at configure time. + * New libodbcinst2 symbol inst_logClose. + * Add inst_logClose() to close and clear ODBCINSTLog. + * Call inst_logClose() and __clear_ini_cache() on shared library closure. + + Patch derived from upstream commits: + * e545d3dd29c7290a70992c1b2b1de4f6219e1a6f + * a2cecd22d0509bf550053e8b7d654936af4c7540 + + See also: https://github.com/lurcher/unixODBC/pull/234 +Author: Daniel Black, Nick Gorham +Bug: https://github.com/lurcher/unixODBC/issues/130 +Bug: https://github.com/lurcher/unixODBC/issues/207 +Bug-Debian: https://bugs.debian.org/1136221 +Last-Updated: 2026-05-14 + +--- a/configure.ac ++++ b/configure.ac +@@ -590,6 +590,20 @@ + done + ]) + ++dnl see if we can declare a destructor ++AC_MSG_CHECKING([if __attribute__((destructor)) works]) ++AC_COMPILE_IFELSE( ++ [AC_LANG_PROGRAM([__attribute__((destructor))], [int x = 0;])], ++ [ ++ AC_MSG_RESULT( yes ) ++ AC_DEFINE([PORTABLE_DESTRUCTOR],[__attribute__((destructor))],[Declare function as a destructor]) ++ ], ++ [ ++ AC_MSG_RESULT( no ) ++ AC_DEFINE([PORTABLE_DESTRUCTOR],[],[Declare function as a destructor]) ++ ] ++) ++ + dnl AC_SUBST(all_includes) + dnl AC_SUBST(all_libraries) + +--- a/odbcinst/SQLGetPrivateProfileString.c ++++ b/odbcinst/SQLGetPrivateProfileString.c +@@ -327,6 +327,7 @@ + mutex_exit( &mutex_ini ); + } + ++PORTABLE_DESTRUCTOR + void __clear_ini_cache( void ) + { + mutex_entry( &mutex_ini ); +--- a/odbcinst/_logging.c ++++ b/odbcinst/_logging.c +@@ -201,3 +201,15 @@ + return ret; + } + ++PORTABLE_DESTRUCTOR ++void inst_logClose( void ) ++{ ++ ++ local_mutex_entry(); ++ ++ if ( hODBCINSTLog ) { ++ logClose( hODBCINSTLog ); ++ } ++ ++ local_mutex_exit(); ++} +--- a/odbcinst/odbcinst.exp ++++ b/odbcinst/odbcinst.exp +@@ -83,4 +83,5 @@ + iniToUpper + iniValue + inst_logPushMsg ++inst_logClose + __clear_ini_cache diff -Nru unixodbc-2.3.12/debian/patches/series unixodbc-2.3.12/debian/patches/series --- unixodbc-2.3.12/debian/patches/series 2024-12-16 22:02:24.000000000 +1100 +++ unixodbc-2.3.12/debian/patches/series 2026-07-07 21:59:05.000000000 +1000 @@ -1 +1,2 @@ 0001-configure-ac-cursor-lib.patch +1136221.patch
