6.1-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Meskhidze konstantin.meskhidze@huawei.com
[ Upstream commit d81efd66106c03771ffc8637855a6ec24caa6350 ]
'old_idx' could be dereferenced after free via 'rb_link_node' function call.
Fixes: b5fda08ef213 ("ubifs: Fix memleak when insert_old_idx() failed") Co-developed-by: Ivanov Mikhail ivanov.mikhail1@huawei-partners.com Signed-off-by: Konstantin Meskhidze konstantin.meskhidze@huawei.com Reviewed-by: Zhihao Cheng chengzhihao1@huawei.com Signed-off-by: Richard Weinberger richard@nod.at Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ubifs/tnc.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c index 6b7d95b65f4b6..f4728e65d1bda 100644 --- a/fs/ubifs/tnc.c +++ b/fs/ubifs/tnc.c @@ -65,6 +65,7 @@ static void do_insert_old_idx(struct ubifs_info *c, else { ubifs_err(c, "old idx added twice!"); kfree(old_idx); + return; } } rb_link_node(&old_idx->rb, parent, p);