diff options
Diffstat (limited to 'import-layers/yocto-poky/meta/recipes-devtools/qemu/qemu/CVE-2016-2197.patch')
-rw-r--r-- | import-layers/yocto-poky/meta/recipes-devtools/qemu/qemu/CVE-2016-2197.patch | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/import-layers/yocto-poky/meta/recipes-devtools/qemu/qemu/CVE-2016-2197.patch b/import-layers/yocto-poky/meta/recipes-devtools/qemu/qemu/CVE-2016-2197.patch deleted file mode 100644 index 946435c43..000000000 --- a/import-layers/yocto-poky/meta/recipes-devtools/qemu/qemu/CVE-2016-2197.patch +++ /dev/null @@ -1,59 +0,0 @@ -From: Prasad J Pandit <address@hidden> - -When IDE AHCI emulation uses Frame Information Structures(FIS) -engine for data transfer, the mapped FIS buffer address is stored -in a static 'bounce.buffer'. When a request is made to map another -memory region, address_space_map() returns NULL because -'bounce.buffer' is in_use. It leads to a null pointer dereference -error while doing 'dma_memory_unmap'. Add a check to avoid it. - -Reported-by: Zuozhi fzz <address@hidden> -Signed-off-by: Prasad J Pandit <address@hidden> - -Upstream-Status: Backport -https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05740.html - -CVE: CVE-2016-2197 -Signed-off-by: Armin Kuster <akuster@mvista.com> - ---- - hw/ide/ahci.c | 16 ++++++++++------ - 1 file changed, 10 insertions(+), 6 deletions(-) - - Update as per review - -> https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg05715.html - -Index: qemu-2.5.0/hw/ide/ahci.c -=================================================================== ---- qemu-2.5.0.orig/hw/ide/ahci.c -+++ qemu-2.5.0/hw/ide/ahci.c -@@ -661,9 +661,11 @@ static bool ahci_map_fis_address(AHCIDev - - static void ahci_unmap_fis_address(AHCIDevice *ad) - { -- dma_memory_unmap(ad->hba->as, ad->res_fis, 256, -- DMA_DIRECTION_FROM_DEVICE, 256); -- ad->res_fis = NULL; -+ if (ad->res_fis) { -+ dma_memory_unmap(ad->hba->as, ad->res_fis, 256, -+ DMA_DIRECTION_FROM_DEVICE, 256); -+ ad->res_fis = NULL; -+ } - } - - static bool ahci_map_clb_address(AHCIDevice *ad) -@@ -677,9 +679,11 @@ static bool ahci_map_clb_address(AHCIDev - - static void ahci_unmap_clb_address(AHCIDevice *ad) - { -- dma_memory_unmap(ad->hba->as, ad->lst, 1024, -- DMA_DIRECTION_FROM_DEVICE, 1024); -- ad->lst = NULL; -+ if (ad->lst) { -+ dma_memory_unmap(ad->hba->as, ad->lst, 1024, -+ DMA_DIRECTION_FROM_DEVICE, 1024); -+ ad->lst = NULL; -+ } - } - - static void ahci_write_fis_sdb(AHCIState *s, NCQTransferState *ncq_tfs) |