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The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Oracle_linux | — | Upgrade kernel-uek-firmwareUpgrade kernel-uek-debugUpgrade kernel-uek-debug-develUpgrade kernel-uekUpgrade dtrace-modules-shared-headersUpgrade kernel-uek-develUpgrade dtrace-modulesUpgrade dtrace-modules-provider-headersUpgrade kernel-uek-doc | Apr 4, 2017 | Nov 27, 2016 |
| Ubuntu | — | Upgrade linux-image-powerpc-e500mc-lts-xenialUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-4.4.0-51-powerpc-smpUpgrade linux-image-4.4.0-1042-snapdragonUpgrade linux-image-4.4.0-51-lowlatencyUpgrade linux-image-4.4.0-51-powerpc64-smpUpgrade linux-image-powerpc64-smpUpgrade linux-image-powerpc-smp-lts-xenialUpgrade linux-image-4.4.0-51-generic-lpaeUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-4.4.0-51-powerpc64-embUpgrade linux-image-snapdragonUpgrade linux-image-powerpc64-emb-lts-xenialUpgrade linux-image-generic-lpaeUpgrade linux-image-powerpc64-smp-lts-xenialUpgrade linux-image-4.4.0-51-powerpc-e500mcUpgrade linux-image-4.4.0-51-genericUpgrade linux-image-powerpc-e500mcUpgrade linux-image-lowlatencyUpgrade linux-image-powerpc64-embUpgrade linux-image-genericUpgrade linux-image-generic-lpae-lts-xenialUpgrade linux-image-powerpc-smpUpgrade linux-image-generic-lts-xenial | Dec 1, 2016 | Nov 27, 2016 |
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