From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
"Dan Carpenter" <dan.carpenter@oracle.com>,
"Christian König" <christian.koenig@amd.com>,
"Peilin Ye" <yepeilin.cs@gmail.com>,
"Alex Deucher" <alexander.deucher@amd.com>
Subject: [PATCH 4.19 19/56] drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl()
Date: Mon, 3 Aug 2020 14:19:34 +0200 [thread overview]
Message-ID: <20200803121851.277418241@linuxfoundation.org> (raw)
In-Reply-To: <20200803121850.306734207@linuxfoundation.org>
From: Peilin Ye <yepeilin.cs@gmail.com>
commit 543e8669ed9bfb30545fd52bc0e047ca4df7fb31 upstream.
Compiler leaves a 4-byte hole near the end of `dev_info`, causing
amdgpu_info_ioctl() to copy uninitialized kernel stack memory to userspace
when `size` is greater than 356.
In 2015 we tried to fix this issue by doing `= {};` on `dev_info`, which
unfortunately does not initialize that 4-byte hole. Fix it by using
memset() instead.
Cc: stable@vger.kernel.org
Fixes: c193fa91b918 ("drm/amdgpu: information leak in amdgpu_info_ioctl()")
Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -549,9 +549,10 @@ static int amdgpu_info_ioctl(struct drm_
return n ? -EFAULT : 0;
}
case AMDGPU_INFO_DEV_INFO: {
- struct drm_amdgpu_info_device dev_info = {};
+ struct drm_amdgpu_info_device dev_info;
uint64_t vm_size;
+ memset(&dev_info, 0, sizeof(dev_info));
dev_info.device_id = dev->pdev->device;
dev_info.chip_rev = adev->rev_id;
dev_info.external_rev = adev->external_rev_id;
next prev parent reply other threads:[~2020-08-03 12:31 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 12:19 [PATCH 4.19 00/56] 4.19.137-rc1 review Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 01/56] crypto: ccp - Release all allocated memory if sha type is invalid Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 02/56] media: rc: prevent memory leak in cx23888_ir_probe Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 03/56] iio: imu: adis16400: fix memory leak Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 04/56] drm/amdgpu: fix multiple memory leaks in acp_hw_init Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 05/56] tracing: Have error path in predicate_parse() free its allocated memory Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 06/56] ath9k_htc: release allocated buffer if timed out Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 07/56] ath9k: " Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 08/56] drm/amd/display: prevent memory leak Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 09/56] btrfs: inode: Verify inode mode to avoid NULL pointer dereference Greg Kroah-Hartman
2020-08-04 7:11 ` Pavel Machek
2020-08-04 7:18 ` Greg Kroah-Hartman
2020-08-10 18:05 ` David Sterba
2020-08-03 12:19 ` [PATCH 4.19 10/56] sctp: implement memory accounting on tx path Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 11/56] Btrfs: fix selftests failure due to uninitialized i_mode in test inodes Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 12/56] PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 13/56] 9p/trans_fd: Fix concurrency del of req_list in p9_fd_cancelled/p9_read_work Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 14/56] wireless: Use offsetof instead of custom macro Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 15/56] ARM: 8986/1: hw_breakpoint: Dont invoke overflow handler on uaccess watchpoints Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 16/56] random32: update the net random state on interrupt and activity Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 17/56] ARM: percpu.h: fix build error Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 18/56] Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers" Greg Kroah-Hartman
2020-08-03 12:19 ` Greg Kroah-Hartman [this message]
2020-08-03 12:19 ` [PATCH 4.19 20/56] drm: hold gem reference until object is no longer accessed Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 21/56] random: fix circular include dependency on arm64 after addition of percpu.h Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 22/56] random32: remove net_rand_state from the latent entropy gcc plugin Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 23/56] rds: Prevent kernel-infoleak in rds_notify_queue_get() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 24/56] xfs: fix missed wakeup on l_flush_wait Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 25/56] net/x25: Fix x25_neigh refcnt leak when x25 disconnect Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 26/56] net/x25: Fix null-ptr-deref in x25_disconnect Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 27/56] xfrm: Fix crash when the hold queue is used Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 28/56] selftests/net: rxtimestamp: fix clang issues for target arch PowerPC Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 29/56] selftests/net: psock_fanout: " Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 30/56] sh: Fix validation of system call number Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 31/56] net/mlx5: Verify Hardware supports requested ptp function on a given pin Greg Kroah-Hartman
2020-08-04 7:39 ` Pavel Machek
2020-08-03 12:19 ` [PATCH 4.19 32/56] net: lan78xx: add missing endpoint sanity check Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 33/56] net: lan78xx: fix transfer-buffer memory leak Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 34/56] mlx4: disable device on shutdown Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 35/56] mlxsw: core: Increase scope of RCU read-side critical section Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 36/56] mlxsw: core: Free EMAD transactions using kfree_rcu() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 37/56] ibmvnic: Fix IRQ mapping disposal in error path Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 38/56] bpf: Fix map leak in HASH_OF_MAPS map Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 39/56] mac80211: mesh: Free ie data when leaving mesh Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 40/56] mac80211: mesh: Free pending skb when destroying a mpath Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 41/56] arm64/alternatives: move length validation inside the subsection Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 42/56] arm64: csum: Fix handling of bad packets Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 43/56] Bluetooth: fix kernel oops in store_pending_adv_report Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 4.19 44/56] net: gemini: Fix missing clk_disable_unprepare() in error path of gemini_ethernet_port_probe() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 45/56] net/mlx5e: fix bpf_prog reference count leaks in mlx5e_alloc_rq Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 46/56] usb: hso: Fix debug compile warning on sparc32 Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 47/56] qed: Disable "MFW indication via attention" SPAM every 5 minutes Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 48/56] nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 49/56] parisc: add support for cmpxchg on u8 pointers Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 50/56] net: ethernet: ravb: exit if re-initialization fails in tx timeout Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 51/56] Revert "i2c: cadence: Fix the hold bit setting" Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 52/56] x86/unwind/orc: Fix ORC for newly forked tasks Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 53/56] cxgb4: add missing release on skb in uld_send() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 54/56] xen-netfront: fix potential deadlock in xennet_remove() Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 55/56] KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled Greg Kroah-Hartman
2020-08-03 12:20 ` [PATCH 4.19 56/56] x86/i8259: Use printk_deferred() to prevent deadlock Greg Kroah-Hartman
2020-08-04 7:46 ` [PATCH 4.19 00/56] 4.19.137-rc1 review Pavel Machek
2020-08-04 14:53 ` Chris Paterson
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