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OpenAdvisories
Medium ALSA-2021:4743 1 CVE

Moderate: llvm-toolset:rhel8 security update

Published Nov 18, 2021 · Updated Oct 29, 2026

Summary

LLVM Toolset provides the LLVM compiler infrastructure framework, the Clang compiler for the C and C++ languages, the LLDB debugger, and related tools for code analysis.

Security Fix(es):

* Developer environment: Unicode's bidirectional (BiDi) override characters can cause trojan source attacks (CVE-2021-42574)

The following changes were introduced in clang in order to facilitate detection of BiDi Unicode characters:

clang-tidy now finds identifiers that contain Unicode characters with right-to-left direction, which can be confusing as they may change the understanding of a whole statement.

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 28

ReleasePackageFixed in
AlmaLinux · 8 clang 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 clang-analyzer 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 clang-devel 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 clang-libs 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 clang-resource-filesystem 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 clang-tools-extra 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 compiler-rt 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 git-clang-format 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 libomp 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 libomp-devel 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 libomp-test 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 lld 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 lld-devel 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 lld-libs 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 lld-test 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 lldb 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 lldb-devel 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-devel 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-doc 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-googletest 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-libs 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-static 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-test 12.0.1-2.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 llvm-toolset 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 python3-clang 12.0.1-4.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 python3-lit 12.0.1-1.module_el8.4.0+2600+cefb5d4c
AlmaLinux · 8 python3-lldb 12.0.1-1.module_el8.4.0+2600+cefb5d4c

Vulnerabilities 1

References

  • report
    https://vulners.com/cve/CVE-2021-42574