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| author | Gaosheng Cui <cuigaosheng1@huawei.com> | 2022-10-25 11:59:30 +0800 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2022-10-25 00:15:19 -0700 |
| commit | 7dd426e33e2f9275ac03a306efdc89aa86515a52 (patch) | |
| tree | 7b58b4c638f640f64233f9d9aeefe512cc263818 /security | |
| parent | d44c692350d9a376abab46aa0d70587951971068 (diff) | |
| download | linux-stable-7dd426e33e2f9275ac03a306efdc89aa86515a52.tar.gz linux-stable-7dd426e33e2f9275ac03a306efdc89aa86515a52.tar.bz2 linux-stable-7dd426e33e2f9275ac03a306efdc89aa86515a52.zip | |
apparmor: fix a memleak in free_ruleset()
When the aa_profile is released, we will call free_ruleset to
release aa_ruleset, but we don't free the memory of aa_ruleset,
so there will be memleak, fix it.
unreferenced object 0xffff8881475df800 (size 1024):
comm "apparmor_parser", pid 883, jiffies 4294899650 (age 9114.088s)
hex dump (first 32 bytes):
00 f8 5d 47 81 88 ff ff 00 f8 5d 47 81 88 ff ff ..]G......]G....
00 00 00 00 00 00 00 00 00 dc 65 47 81 88 ff ff ..........eG....
backtrace:
[<00000000370e658e>] __kmem_cache_alloc_node+0x182/0x700
[<00000000f2f5a6d2>] kmalloc_trace+0x2c/0x130
[<00000000c5c905b3>] aa_alloc_profile+0x1bc/0x5c0
[<00000000bc4fa72b>] unpack_profile+0x319/0x30c0
[<00000000eab791e9>] aa_unpack+0x307/0x1450
[<000000002c3a6ee1>] aa_replace_profiles+0x1b8/0x3790
[<00000000d0c3fd54>] policy_update+0x35a/0x890
[<00000000d04fed90>] profile_replace+0x1d1/0x260
[<00000000cba0c0a7>] vfs_write+0x283/0xd10
[<000000006bae64a5>] ksys_write+0x134/0x260
[<00000000b2fd8f31>] __x64_sys_write+0x78/0xb0
[<00000000f3c8a015>] do_syscall_64+0x5c/0x90
[<00000000a242b1db>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Fixes: 217af7e2f4de ("apparmor: refactor profile rules and attachments")
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/policy.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c index 66034cf96f4c..51e8184e0fec 100644 --- a/security/apparmor/policy.c +++ b/security/apparmor/policy.c @@ -215,6 +215,7 @@ static void free_ruleset(struct aa_ruleset *rules) for (i = 0; i < rules->secmark_count; i++) kfree_sensitive(rules->secmark[i].label); kfree_sensitive(rules->secmark); + kfree_sensitive(rules); } struct aa_ruleset *aa_alloc_ruleset(gfp_t gfp) |