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| author | Li RongQing | 2019-03-07 02:16:24 +0100 |
|---|---|---|
| committer | Paul Moore | 2019-03-19 00:11:49 +0100 |
| commit | 95e0b46fcebd7dbf6850dee96046e4c4ddc7f69c (patch) | |
| tree | 96f51a145ebd0a123a41fe995ee11a0ec526f6bf /kernel/audit.c | |
| parent | Linux 5.1-rc1 (diff) | |
| download | kernel-qcow2-linux-95e0b46fcebd7dbf6850dee96046e4c4ddc7f69c.tar.gz kernel-qcow2-linux-95e0b46fcebd7dbf6850dee96046e4c4ddc7f69c.tar.xz kernel-qcow2-linux-95e0b46fcebd7dbf6850dee96046e4c4ddc7f69c.zip | |
audit: fix a memleak caused by auditing load module
module.name will be allocated unconditionally when auditing load
module, and audit_log_start() can fail with other reasons, or
audit_log_exit maybe not called, caused module.name is not freed
so free module.name in audit_free_context and __audit_syscall_exit
unreferenced object 0xffff88af90837d20 (size 8):
comm "modprobe", pid 1036, jiffies 4294704867 (age 3069.138s)
hex dump (first 8 bytes):
69 78 67 62 65 00 ff ff ixgbe...
backtrace:
[<0000000008da28fe>] __audit_log_kern_module+0x33/0x80
[<00000000c1491e61>] load_module+0x64f/0x3850
[<000000007fc9ae3f>] __do_sys_init_module+0x218/0x250
[<0000000000d4a478>] do_syscall_64+0x117/0x400
[<000000004924ded8>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<000000007dc331dd>] 0xffffffffffffffff
Fixes: ca86cad7380e3 ("audit: log module name on init_module")
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
[PM: manual merge fixup in __audit_syscall_exit()]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'kernel/audit.c')
0 files changed, 0 insertions, 0 deletions