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Message #78746
[Bug 1340927] Re: libapparmor aalogparse memory leak
Attached is a patch as a part of a trusty SRU.
** Patch added: "libapparmor-fix_memory_leaks-lp1340927.patch"
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1340927/+attachment/4399540/+files/libapparmor-fix_memory_leaks-lp1340927.patch
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https://bugs.launchpad.net/bugs/1340927
Title:
libapparmor aalogparse memory leak
Status in AppArmor Linux application security framework:
Fix Released
Status in AppArmor 2.8 series:
Fix Released
Status in apparmor package in Ubuntu:
Fix Released
Bug description:
My kern.log is filled by lots of messages so aa-notify tries to parse
them on first run.
My OS is going down when there's no memory left because aa-notify
leaks.
I've found that leak is in /usr/bin/aa-notify file in function
parse_message.
If I comment lines from
my ($test) = LibAppArmorc::parse_record($msg);
to
LibAppArmorc::free_record($test);
then all goes fine. Program parses file and no memory leak is happened.
Do I've got sources of my version (libapparmor-perl (2.8.0-5.1) from ubuntu) and found that some variables from aa_log_record struct were not freed by the free_record function. These are
char *net_local_addr;
char *net_foreign_addr;
Could this be a reason of a leak?
I haven't much time right now to compile and run tests. So I posted
just information I've found and commented lines in bugged function to
get my system working.
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