From: Dean Luick dean.luick@cornelisnetworks.com

stable inclusion from stable-v5.10.168 commit 79b595d9591426156a9e0635a5b5115508a36fef category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4LR CVE: CVE-2023-52747 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit 6601fc0d15ffc20654e39486f9bef35567106d68 ]

Fix a resource leak if an error occurs.

Fixes: f404ca4c7ea8 ("IB/hfi1: Refactor hfi_user_exp_rcv_setup() IOCTL") Signed-off-by: Dean Luick dean.luick@cornelisnetworks.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@cornelisnetworks.com Link: https://lore.kernel.org/r/167354736291.2132367.10894218740150168180.stgit@aw... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zeng Heng zengheng4@huawei.com --- drivers/infiniband/hw/hfi1/file_ops.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index 34ffca618427..499bfae098c2 100644 --- a/drivers/infiniband/hw/hfi1/file_ops.c +++ b/drivers/infiniband/hw/hfi1/file_ops.c @@ -1345,12 +1345,15 @@ static int user_exp_rcv_setup(struct hfi1_filedata *fd, unsigned long arg, addr = arg + offsetof(struct hfi1_tid_info, tidcnt); if (copy_to_user((void __user *)addr, &tinfo.tidcnt, sizeof(tinfo.tidcnt))) - return -EFAULT; + ret = -EFAULT;

addr = arg + offsetof(struct hfi1_tid_info, length); - if (copy_to_user((void __user *)addr, &tinfo.length, + if (!ret && copy_to_user((void __user *)addr, &tinfo.length, sizeof(tinfo.length))) ret = -EFAULT; + + if (ret) + hfi1_user_exp_rcv_invalid(fd, &tinfo); }

return ret;