Red Hat in all caps says STOP USAGE OF ANY FEDORA RAWHIDE INSTANCES
Red Hat on Friday warned that a malicious backdoor found in the widely used data compression library called xz may be present in Fedora Linux 40, 41, and in the Fedora Rawhide developer distribution.
Users of other Linux and OS distributions should check to see which version of the xz suite they have installed.screams."Fedora Rawhide will be reverted to xz-5.4.x shortly, and once that is done, Fedora Rawhide instances can safely be redeployed."CIOs largely believe their software supply chain is vulnerableThe malicious code in xz versions 5.6.0 and 5.6.1 has been obfuscated, Red Hat says, and is only fully present in the download package.
This authentication interference has the potential to allow a miscreant to break sshd authentication and remotely gain unauthorized access to an affected system."The backdoor initially intercepts execution by replacing the ifunc resolvers crc32_resolve, crc64_resolve with different code, which calls _get_cpuid, injected into the code . In xz 5.6.
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