From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Stan Lu <stan.lu@mediatek.com>,
Chunfeng Yun <chunfeng.yun@mediatek.com>
Subject: [PATCH 5.14 09/23] usb: xhci-mtk: fix issue of out-of-bounds array access
Date: Fri, 10 Sep 2021 14:29:59 +0200 [thread overview]
Message-ID: <20210910122916.313150654@linuxfoundation.org> (raw)
In-Reply-To: <20210910122916.022815161@linuxfoundation.org>
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
commit de5107f473190538a65aac7edea85209cd5c1a8f upstream.
Bus bandwidth array access is based on esit, increase one
will cause out-of-bounds issue; for example, when esit is
XHCI_MTK_MAX_ESIT, will overstep boundary.
Fixes: 7c986fbc16ae ("usb: xhci-mtk: get the microframe boundary for ESIT")
Cc: <stable@vger.kernel.org>
Reported-by: Stan Lu <stan.lu@mediatek.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1629189389-18779-5-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/host/xhci-mtk-sch.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/usb/host/xhci-mtk-sch.c
+++ b/drivers/usb/host/xhci-mtk-sch.c
@@ -575,10 +575,12 @@ static u32 get_esit_boundary(struct mu3h
u32 boundary = sch_ep->esit;
if (sch_ep->sch_tt) { /* LS/FS with TT */
- /* tune for CS */
- if (sch_ep->ep_type != ISOC_OUT_EP)
- boundary++;
- else if (boundary > 1) /* normally esit >= 8 for FS/LS */
+ /*
+ * tune for CS, normally esit >= 8 for FS/LS,
+ * not add one for other types to avoid access array
+ * out of boundary
+ */
+ if (sch_ep->ep_type == ISOC_OUT_EP && boundary > 1)
boundary--;
}
next prev parent reply other threads:[~2021-09-10 12:32 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-10 12:29 [PATCH 5.14 00/23] 5.14.3-rc1 review Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 01/23] firmware: dmi: Move product_sku info to the end of the modalias Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 02/23] can: c_can: fix null-ptr-deref on ioctl() Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 03/23] igmp: Add ip_mc_list lock in ip_check_mc_rcu Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 04/23] Revert "r8169: avoid link-up interrupt issue on RTL8106e if user enables ASPM" Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 05/23] ALSA: usb-audio: Add registration quirk for JBL Quantum 800 Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 06/23] Bluetooth: Add additional Bluetooth part for Realtek 8852AE Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 07/23] Bluetooth: btusb: Make the CSR clone chip force-suspend workaround more generic Greg Kroah-Hartman
2021-09-10 12:29 ` [PATCH 5.14 08/23] usb: host: xhci-rcar: Dont reload firmware after the completion Greg Kroah-Hartman
2021-09-10 12:29 ` Greg Kroah-Hartman [this message]
2021-09-10 12:30 ` [PATCH 5.14 10/23] usb: cdnsp: fix the wrong mult value for HS isoc or intr Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 11/23] usb: gadget: tegra-xudc: " Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 12/23] usb: mtu3: restore HS function when set SS/SSP Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 13/23] usb: mtu3: use @mult for HS isoc or intr Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 14/23] usb: mtu3: fix the wrong HS mult value Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 15/23] xhci: fix even more unsafe memory usage in xhci tracing Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 16/23] xhci: fix " Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 17/23] xhci: Fix failure to give back some cached cancelled URBs Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 18/23] staging: mt7621-pci: fix hang when nothing is connected to pcie ports Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 19/23] x86/reboot: Limit Dell Optiplex 990 quirk to early BIOS versions Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 20/23] PCI: Call Max Payload Size-related fixup quirks early Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 21/23] cxl/pci: Fix debug message in cxl_probe_regs() Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 22/23] cxl/pci: Fix lockdown level Greg Kroah-Hartman
2021-09-10 12:30 ` [PATCH 5.14 23/23] cxl/acpi: Do not add DSDT disabled ACPI0016 host bridge ports Greg Kroah-Hartman
2021-09-10 20:19 ` [PATCH 5.14 00/23] 5.14.3-rc1 review Florian Fainelli
2021-09-10 20:43 ` Fox Chen
2021-09-10 23:16 ` Shuah Khan
2021-09-11 16:10 ` Justin Forbes
2021-09-11 19:36 ` Guenter Roeck
2021-09-12 0:47 ` Daniel Díaz
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