From: Armin Kuster <akus...@mvista.com> Source: qemu.org MR: 106958 Type: Security Fix Disposition: Backport from qemu.org ChangeID: 9d0c21c4ff5dc12ba623685cd7ae4d4bc294f519 Description:
Signed-off-by: Armin Kuster <akus...@mvista.com> Signed-off-by: Steve Sakoman <st...@sakoman.com> --- meta/recipes-devtools/qemu/qemu.inc | 2 + .../qemu/qemu/CVE-2020-25624_1.patch | 87 +++++++++++++++ .../qemu/qemu/CVE-2020-25624_2.patch | 101 ++++++++++++++++++ 3 files changed, 190 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2020-25624_1.patch create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2020-25624_2.patch diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index a33008670b..6978be951e 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -56,6 +56,8 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2021-20203.patch \ file://CVE-2021-3392.patch \ file://CVE-2020-25085.patch \ + file://CVE-2020-25624_1.patch \ + file://CVE-2020-25624_2.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-25624_1.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-25624_1.patch new file mode 100644 index 0000000000..a46b5be193 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-25624_1.patch @@ -0,0 +1,87 @@ +From fbec359e9279ce78908b9f2af2c264e7448336af Mon Sep 17 00:00:00 2001 +From: Guenter Roeck <li...@roeck-us.net> +Date: Mon, 17 Feb 2020 12:48:10 -0800 +Subject: [PATCH] hw: usb: hcd-ohci: Move OHCISysBusState and TYPE_SYSBUS_OHCI + to include file + +We need to be able to use OHCISysBusState outside hcd-ohci.c, so move it +to its include file. + +Reviewed-by: Gerd Hoffmann <kra...@redhat.com> +Signed-off-by: Guenter Roeck <li...@roeck-us.net> +Tested-by: Niek Linnenbank <nieklinnenb...@gmail.com> +Message-id: 20200217204812.9857-2-li...@roeck-us.net +Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> + +Upstream-Status: Backport +CVE: CVE-2020-25624 patch #1 +Signed-off-by: Armin Kuster <akus...@mvista.com> + +--- + hw/usb/hcd-ohci.c | 15 --------------- + hw/usb/hcd-ohci.h | 16 ++++++++++++++++ + 2 files changed, 16 insertions(+), 15 deletions(-) + +diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c +index 8a94bd004a..1e6e85e86a 100644 +--- a/hw/usb/hcd-ohci.c ++++ b/hw/usb/hcd-ohci.c +@@ -1870,21 +1870,6 @@ void ohci_sysbus_die(struct OHCIState *ohci) + ohci_bus_stop(ohci); + } + +-#define TYPE_SYSBUS_OHCI "sysbus-ohci" +-#define SYSBUS_OHCI(obj) OBJECT_CHECK(OHCISysBusState, (obj), TYPE_SYSBUS_OHCI) +- +-typedef struct { +- /*< private >*/ +- SysBusDevice parent_obj; +- /*< public >*/ +- +- OHCIState ohci; +- char *masterbus; +- uint32_t num_ports; +- uint32_t firstport; +- dma_addr_t dma_offset; +-} OHCISysBusState; +- + static void ohci_realize_pxa(DeviceState *dev, Error **errp) + { + OHCISysBusState *s = SYSBUS_OHCI(dev); +diff --git a/hw/usb/hcd-ohci.h b/hw/usb/hcd-ohci.h +index 16e3f1e13a..5c8819aedf 100644 +--- a/hw/usb/hcd-ohci.h ++++ b/hw/usb/hcd-ohci.h +@@ -22,6 +22,7 @@ + #define HCD_OHCI_H + + #include "sysemu/dma.h" ++#include "hw/usb.h" + + /* Number of Downstream Ports on the root hub: */ + #define OHCI_MAX_PORTS 15 +@@ -90,6 +91,21 @@ typedef struct OHCIState { + void (*ohci_die)(struct OHCIState *ohci); + } OHCIState; + ++#define TYPE_SYSBUS_OHCI "sysbus-ohci" ++#define SYSBUS_OHCI(obj) OBJECT_CHECK(OHCISysBusState, (obj), TYPE_SYSBUS_OHCI) ++ ++typedef struct { ++ /*< private >*/ ++ SysBusDevice parent_obj; ++ /*< public >*/ ++ ++ OHCIState ohci; ++ char *masterbus; ++ uint32_t num_ports; ++ uint32_t firstport; ++ dma_addr_t dma_offset; ++} OHCISysBusState; ++ + extern const VMStateDescription vmstate_ohci_state; + + void usb_ohci_init(OHCIState *ohci, DeviceState *dev, uint32_t num_ports, +-- +2.25.1 + diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-25624_2.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-25624_2.patch new file mode 100644 index 0000000000..8c1275b2f4 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-25624_2.patch @@ -0,0 +1,101 @@ +From 1328fe0c32d5474604105b8105310e944976b058 Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <p...@fedoraproject.org> +Date: Tue, 15 Sep 2020 23:52:58 +0530 +Subject: [PATCH] hw: usb: hcd-ohci: check len and frame_number variables + +While servicing the OHCI transfer descriptors(TD), OHCI host +controller derives variables 'start_addr', 'end_addr', 'len' +etc. from values supplied by the host controller driver. +Host controller driver may supply values such that using +above variables leads to out-of-bounds access issues. +Add checks to avoid them. + +AddressSanitizer: stack-buffer-overflow on address 0x7ffd53af76a0 + READ of size 2 at 0x7ffd53af76a0 thread T0 + #0 ohci_service_iso_td ../hw/usb/hcd-ohci.c:734 + #1 ohci_service_ed_list ../hw/usb/hcd-ohci.c:1180 + #2 ohci_process_lists ../hw/usb/hcd-ohci.c:1214 + #3 ohci_frame_boundary ../hw/usb/hcd-ohci.c:1257 + #4 timerlist_run_timers ../util/qemu-timer.c:572 + #5 qemu_clock_run_timers ../util/qemu-timer.c:586 + #6 qemu_clock_run_all_timers ../util/qemu-timer.c:672 + #7 main_loop_wait ../util/main-loop.c:527 + #8 qemu_main_loop ../softmmu/vl.c:1676 + #9 main ../softmmu/main.c:50 + +Reported-by: Gaoning Pan <p...@zju.edu.cn> +Reported-by: Yongkang Jia <j_kan...@163.com> +Reported-by: Yi Ren <yunye...@alibaba-inc.com> +Signed-off-by: Prasad J Pandit <p...@fedoraproject.org> +Message-id: 20200915182259.68522-2-ppan...@redhat.com +Signed-off-by: Gerd Hoffmann <kra...@redhat.com> + +Upstream-Status: Backport +CVE: CVE-2020-25624 patch #2 +Signed-off-by: Armin Kuster <akus...@mvista.com> + +--- + hw/usb/hcd-ohci.c | 24 ++++++++++++++++++++++-- + 1 file changed, 22 insertions(+), 2 deletions(-) + +diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c +index 1e6e85e86a..9dc59101f9 100644 +--- a/hw/usb/hcd-ohci.c ++++ b/hw/usb/hcd-ohci.c +@@ -731,7 +731,11 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed, + } + + start_offset = iso_td.offset[relative_frame_number]; +- next_offset = iso_td.offset[relative_frame_number + 1]; ++ if (relative_frame_number < frame_count) { ++ next_offset = iso_td.offset[relative_frame_number + 1]; ++ } else { ++ next_offset = iso_td.be; ++ } + + if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) || + ((relative_frame_number < frame_count) && +@@ -764,7 +768,12 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed, + } + } else { + /* Last packet in the ISO TD */ +- end_addr = iso_td.be; ++ end_addr = next_offset; ++ } ++ ++ if (start_addr > end_addr) { ++ trace_usb_ohci_iso_td_bad_cc_overrun(start_addr, end_addr); ++ return 1; + } + + if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) { +@@ -773,6 +782,9 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed, + } else { + len = end_addr - start_addr + 1; + } ++ if (len > sizeof(ohci->usb_buf)) { ++ len = sizeof(ohci->usb_buf); ++ } + + if (len && dir != OHCI_TD_DIR_IN) { + if (ohci_copy_iso_td(ohci, start_addr, end_addr, ohci->usb_buf, len, +@@ -975,8 +987,16 @@ static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed) + if ((td.cbp & 0xfffff000) != (td.be & 0xfffff000)) { + len = (td.be & 0xfff) + 0x1001 - (td.cbp & 0xfff); + } else { ++ if (td.cbp > td.be) { ++ trace_usb_ohci_iso_td_bad_cc_overrun(td.cbp, td.be); ++ ohci_die(ohci); ++ return 1; ++ } + len = (td.be - td.cbp) + 1; + } ++ if (len > sizeof(ohci->usb_buf)) { ++ len = sizeof(ohci->usb_buf); ++ } + + pktlen = len; + if (len && dir != OHCI_TD_DIR_IN) { +-- +2.25.1 + -- 2.25.1
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