From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, sohu0106 <sohu0106@126.com>,
Vladis Dronov <vdronov@redhat.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: [PATCH 3.18 23/24] video: fbdev: aty: do not leak uninitialized padding in clk to userspace
Date: Tue, 3 Oct 2017 14:18:44 +0200 [thread overview]
Message-ID: <20171003113649.497630473@linuxfoundation.org> (raw)
In-Reply-To: <20171003113646.772919167@linuxfoundation.org>
3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Vladis Dronov <vdronov@redhat.com>
commit 8e75f7a7a00461ef6d91797a60b606367f6e344d upstream.
'clk' is copied to a userland with padding byte(s) after 'vclk_post_div'
field unitialized, leaking data from the stack. Fix this ensuring all of
'clk' is initialized to zero.
References: https://github.com/torvalds/linux/pull/441
Reported-by: sohu0106 <sohu0106@126.com>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/video/fbdev/aty/atyfb_base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/video/fbdev/aty/atyfb_base.c
+++ b/drivers/video/fbdev/aty/atyfb_base.c
@@ -1852,7 +1852,7 @@ static int atyfb_ioctl(struct fb_info *i
#if defined(DEBUG) && defined(CONFIG_FB_ATY_CT)
case ATYIO_CLKR:
if (M64_HAS(INTEGRATED)) {
- struct atyclk clk;
+ struct atyclk clk = { 0 };
union aty_pll *pll = &par->pll;
u32 dsp_config = pll->ct.dsp_config;
u32 dsp_on_off = pll->ct.dsp_on_off;
next prev parent reply other threads:[~2017-10-03 13:17 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-03 12:18 [PATCH 3.18 00/24] 3.18.73-stable review Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 01/24] cifs: release cifs root_cred after exit_cifs Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 02/24] cifs: release auth_key.response for reconnect Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 03/24] mac80211: flush hw_roc_start work before cancelling the ROC Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 04/24] KVM: PPC: Book3S: Fix race and leak in kvm_vm_ioctl_create_spapr_tce() Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 05/24] tracing: Fix trace_pipe behavior for instance traces Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 06/24] tracing: Erase irqsoff trace with empty write Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 07/24] scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesnt parse nlmsg properly Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 08/24] crypto: talitos - fix sha224 Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 09/24] KEYS: fix writing past end of user-supplied buffer in keyring_read() Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 10/24] KEYS: prevent creating a different users keyrings Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 11/24] KEYS: prevent KEYCTL_READ on negative key Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 12/24] powerpc/pseries: Fix parent_dn reference leak in add_dt_node() Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 13/24] SMB: Validate negotiate (to protect against downgrade) even if signing off Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 14/24] SMB3: Dont ignore O_SYNC/O_DSYNC and O_DIRECT flags Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 15/24] vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 16/24] nl80211: check for the required netlink attributes presence Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 17/24] bsg-lib: dont free job in bsg_prepare_job Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 18/24] arm64: Make sure SPsel is always set Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 19/24] kvm: nVMX: Dont allow L2 to access the hardware CR8 Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 20/24] PCI: Fix race condition with driver_override Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 21/24] btrfs: prevent to set invalid default subvolid Greg Kroah-Hartman
2017-10-03 12:18 ` [PATCH 3.18 22/24] x86/fpu: Dont let userspace set bogus xcomp_bv Greg Kroah-Hartman
2017-10-03 12:18 ` [kernel-hardening] " Greg Kroah-Hartman
2017-10-03 12:18 ` Greg Kroah-Hartman [this message]
2017-10-03 12:18 ` [PATCH 3.18 24/24] swiotlb-xen: implement xen_swiotlb_dma_mmap callback Greg Kroah-Hartman
2017-10-03 19:25 ` [PATCH 3.18 00/24] 3.18.73-stable review Shuah Khan
2017-10-04 7:53 ` Greg Kroah-Hartman
2017-10-03 20:29 ` Guenter Roeck
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