diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2020-12829_1.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2020-12829_1.patch | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-12829_1.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-12829_1.patch new file mode 100644 index 0000000000..6fee4f640d --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-12829_1.patch @@ -0,0 +1,164 @@ +From e29da77e5fddf6480e3a0e80b63d703edaec751b Mon Sep 17 00:00:00 2001 +From: BALATON Zoltan <balaton@eik.bme.hu> +Date: Thu, 21 May 2020 21:39:44 +0200 +Subject: [PATCH] sm501: Convert printf + abort to qemu_log_mask +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Some places already use qemu_log_mask() to log unimplemented features +or errors but some others have printf() then abort(). Convert these to +qemu_log_mask() and avoid aborting to prevent guests to easily cause +denial of service. + +Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> +Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> +Message-id: 305af87f59d81e92f2aaff09eb8a3603b8baa322.1590089984.git.balaton@eik.bme.hu +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> + +Upstream-Status: Backport +CVE: CVE-2020-12829 dep#1 +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + hw/display/sm501.c | 57 ++++++++++++++++++++++------------------------ + 1 file changed, 27 insertions(+), 30 deletions(-) + +diff --git a/hw/display/sm501.c b/hw/display/sm501.c +index acc692531a..bd3ccfe311 100644 +--- a/hw/display/sm501.c ++++ b/hw/display/sm501.c +@@ -727,8 +727,8 @@ static void sm501_2d_operation(SM501State *s) + int fb_len = get_width(s, crt) * get_height(s, crt) * get_bpp(s, crt); + + if (addressing != 0x0) { +- printf("%s: only XY addressing is supported.\n", __func__); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: only XY addressing is supported.\n"); ++ return; + } + + if (rop_mode == 0) { +@@ -754,8 +754,8 @@ static void sm501_2d_operation(SM501State *s) + + if ((s->twoD_source_base & 0x08000000) || + (s->twoD_destination_base & 0x08000000)) { +- printf("%s: only local memory is supported.\n", __func__); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: only local memory is supported.\n"); ++ return; + } + + switch (operation) { +@@ -823,9 +823,9 @@ static void sm501_2d_operation(SM501State *s) + break; + + default: +- printf("non-implemented SM501 2D operation. %d\n", operation); +- abort(); +- break; ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented 2D operation: %d\n", ++ operation); ++ return; + } + + if (dst_base >= get_fb_addr(s, crt) && +@@ -892,9 +892,8 @@ static uint64_t sm501_system_config_read(void *opaque, hwaddr addr, + break; + + default: +- printf("sm501 system config : not implemented register read." +- " addr=%x\n", (int)addr); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented system config" ++ "register read. addr=%" HWADDR_PRIx "\n", addr); + } + + return ret; +@@ -948,15 +947,15 @@ static void sm501_system_config_write(void *opaque, hwaddr addr, + break; + case SM501_ENDIAN_CONTROL: + if (value & 0x00000001) { +- printf("sm501 system config : big endian mode not implemented.\n"); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: system config big endian mode not" ++ " implemented.\n"); + } + break; + + default: +- printf("sm501 system config : not implemented register write." +- " addr=%x, val=%x\n", (int)addr, (uint32_t)value); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented system config" ++ "register write. addr=%" HWADDR_PRIx ++ ", val=%" PRIx64 "\n", addr, value); + } + } + +@@ -1207,9 +1206,8 @@ static uint64_t sm501_disp_ctrl_read(void *opaque, hwaddr addr, + break; + + default: +- printf("sm501 disp ctrl : not implemented register read." +- " addr=%x\n", (int)addr); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented disp ctrl register " ++ "read. addr=%" HWADDR_PRIx "\n", addr); + } + + return ret; +@@ -1345,9 +1343,9 @@ static void sm501_disp_ctrl_write(void *opaque, hwaddr addr, + break; + + default: +- printf("sm501 disp ctrl : not implemented register write." +- " addr=%x, val=%x\n", (int)addr, (unsigned)value); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented disp ctrl register " ++ "write. addr=%" HWADDR_PRIx ++ ", val=%" PRIx64 "\n", addr, value); + } + } + +@@ -1433,9 +1431,8 @@ static uint64_t sm501_2d_engine_read(void *opaque, hwaddr addr, + ret = 0; /* Should return interrupt status */ + break; + default: +- printf("sm501 disp ctrl : not implemented register read." +- " addr=%x\n", (int)addr); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented disp ctrl register " ++ "read. addr=%" HWADDR_PRIx "\n", addr); + } + + return ret; +@@ -1520,9 +1517,9 @@ static void sm501_2d_engine_write(void *opaque, hwaddr addr, + /* ignored, writing 0 should clear interrupt status */ + break; + default: +- printf("sm501 2d engine : not implemented register write." +- " addr=%x, val=%x\n", (int)addr, (unsigned)value); +- abort(); ++ qemu_log_mask(LOG_UNIMP, "sm501: not implemented 2d engine register " ++ "write. addr=%" HWADDR_PRIx ++ ", val=%" PRIx64 "\n", addr, value); + } + } + +@@ -1670,9 +1667,9 @@ static void sm501_update_display(void *opaque) + draw_line = draw_line32_funcs[dst_depth_index]; + break; + default: +- printf("sm501 update display : invalid control register value.\n"); +- abort(); +- break; ++ qemu_log_mask(LOG_GUEST_ERROR, "sm501: update display" ++ "invalid control register value.\n"); ++ return; + } + + /* set up to draw hardware cursor */ +-- +2.25.1 + |