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xen_uvp
CVE-2016-4020-qemuu-leakage-of-stack-memory-to-...
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File CVE-2016-4020-qemuu-leakage-of-stack-memory-to-guest.patch of Package xen_uvp
References: bsc#975907 CVE-2016-4020 When processing Task Priorty Register(TPR) access, it could leak automatic stack variable 'imm32' in patch_instruction(). Initialise the variable to avoid it. Reported by: Donghai Zdh <address@hidden> Signed-off-by: Prasad J Pandit <address@hidden> --- hw/i386/kvmvapic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: xen-4.5.3-testing/tools/qemu-xen-dir-remote/hw/i386/kvmvapic.c =================================================================== --- xen-4.5.3-testing.orig/tools/qemu-xen-dir-remote/hw/i386/kvmvapic.c +++ xen-4.5.3-testing/tools/qemu-xen-dir-remote/hw/i386/kvmvapic.c @@ -394,7 +394,7 @@ static void patch_instruction(VAPICROMSt CPUX86State *env = &cpu->env; VAPICHandlers *handlers; uint8_t opcode[2]; - uint32_t imm32; + uint32_t imm32 = 0; target_ulong current_pc = 0; target_ulong current_cs_base = 0; int current_flags = 0;
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