Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka "straight-line speculation."
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
Link | Tags |
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https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability | vendor advisory |
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/frequently-asked-questions | vendor advisory |
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/downloads/straight-line-speculation | vendor advisory |
https://gcc.gnu.org/pipermail/gcc-patches/2020-June/547520.html | third party advisory patch |
http://lists.llvm.org/pipermail/llvm-dev/2020-June/142109.html | third party advisory mailing list |
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00040.html | mailing list third party advisory vendor advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00039.html | mailing list third party advisory vendor advisory |