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Meltdown exploits a race condition, inherent in the design of many modern CPUs.This occurs between memory access and privilege checking during instruction processing. . Additionally, combined with a cache side-channel attack, this vulnerability allows a process to bypass the normal privilege checks that isolate the exploit process from accessing data belonging to the operating system and other ...
Because side-channel attacks rely on the relationship between information emitted (leaked) through a side channel and the secret data, countermeasures fall into two main categories: (1) eliminate or reduce the release of such information and (2) eliminate the relationship between the leaked information and the secret data, that is, make the leaked information unrelated, or rather uncorrelated ...
Although it is possible to get around this problem using conversion code and larger data types, it makes using Java cumbersome for handling unsigned data. While a 32-bit signed integer may be used to hold a 16-bit unsigned value losslessly, and a 64-bit signed integer a 32-bit unsigned integer, there is no larger type to hold a 64-bit unsigned ...
February: The German Chaos Computer Club has reported more than fifty data leaks. Government institutions and companies from various business sectors were affected. In total, the researchers had access to over 6.4 million personal data records as well as terabytes of log data and source code. [209] [210]
The strictfp keyword was introduced into Java with the Java virtual machine (JVM) version 1.2 and its functionality was removed in JVM version 17. [2] As of Java 17, IEEE 754 semantics is required, thus using this keyword has no effect.
After a period of pressure on the founder and head maintainer to hand over the control of the project via apparent sock puppetry, Jia Tan gained the position of co-maintainer of XZ Utils and was able to sign off on version 5.6.0, which introduced the backdoor, and version 5.6.1, which patched some anomalous behavior that could have been ...
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These leaks can lead to performance issues, unexpected behavior, and increased cognitive load on software developers, who are forced to understand both the abstraction and the underlying details it was meant to hide. This highlights a cause of software defects: the reliance of the software developer on an abstraction's infallibility.