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| author | Pan Bian <bianpan2016@163.com> | 2018-12-01 01:09:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-17 11:28:54 +0300 |
| commit | 5ee5fa61d04e2bd8ab004f307bd6ad0808482746 (patch) | |
| tree | 5e1f6e34a7d4446075f37385a4a0983f582a6ee5 /fs/hfsplus | |
| parent | c7aafad098b066ceee0d6a3b2ba63573ef09dc38 (diff) | |
| download | linux-5ee5fa61d04e2bd8ab004f307bd6ad0808482746.tar.xz | |
hfs: do not free node before using
[ Upstream commit ce96a407adef126870b3f4a1b73529dd8aa80f49 ]
hfs_bmap_free() frees the node via hfs_bnode_put(node). However, it
then reads node->this when dumping error message on an error path, which
may result in a use-after-free bug. This patch frees the node only when
it is never again used.
Link: http://lkml.kernel.org/r/1542963889-128825-1-git-send-email-bianpan2016@163.com
Fixes: a1185ffa2fc ("HFS rewrite")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Joe Perches <joe@perches.com>
Cc: Ernesto A. Fernandez <ernesto.mnd.fernandez@gmail.com>
Cc: Viacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/hfsplus')
0 files changed, 0 insertions, 0 deletions