# ALSA-2021:4743: Security update for 28 packages

ALSA-2021:4743, released November 18, 2021, fixes 1 CVE across 28 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/alsa-2021-4743
- Platform: Linux
- Released: Nov 18, 2021
- Priority: High (Closes CVE-2021-42574, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2021:4743

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [clang](https://patchblox.com/security/data/product/linux/clang.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [clang-analyzer](https://patchblox.com/security/data/product/linux/clang-analyzer.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [clang-devel](https://patchblox.com/security/data/product/linux/clang-devel.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [clang-libs](https://patchblox.com/security/data/product/linux/clang-libs.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [clang-resource-filesystem](https://patchblox.com/security/data/product/linux/clang-resource-filesystem.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [clang-tools-extra](https://patchblox.com/security/data/product/linux/clang-tools-extra.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [compiler-rt](https://patchblox.com/security/data/product/linux/compiler-rt.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [git-clang-format](https://patchblox.com/security/data/product/linux/git-clang-format.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [libomp](https://patchblox.com/security/data/product/linux/libomp.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [libomp-devel](https://patchblox.com/security/data/product/linux/libomp-devel.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [libomp-test](https://patchblox.com/security/data/product/linux/libomp-test.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [lld](https://patchblox.com/security/data/product/linux/lld.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [lld-devel](https://patchblox.com/security/data/product/linux/lld-devel.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [lld-libs](https://patchblox.com/security/data/product/linux/lld-libs.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [lld-test](https://patchblox.com/security/data/product/linux/lld-test.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [lldb](https://patchblox.com/security/data/product/linux/lldb.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [lldb-devel](https://patchblox.com/security/data/product/linux/lldb-devel.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [llvm](https://patchblox.com/security/data/product/linux/llvm.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-devel](https://patchblox.com/security/data/product/linux/llvm-devel.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-doc](https://patchblox.com/security/data/product/linux/llvm-doc.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-googletest](https://patchblox.com/security/data/product/linux/llvm-googletest.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-libs](https://patchblox.com/security/data/product/linux/llvm-libs.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-static](https://patchblox.com/security/data/product/linux/llvm-static.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-test](https://patchblox.com/security/data/product/linux/llvm-test.md) | almalinux 8 | 12.0.1-2.module_el8.4.0+2600+cefb5d4c |
| [llvm-toolset](https://patchblox.com/security/data/product/linux/llvm-toolset.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [python3-clang](https://patchblox.com/security/data/product/linux/python3-clang.md) | almalinux 8 | 12.0.1-4.module_el8.4.0+2600+cefb5d4c |
| [python3-lit](https://patchblox.com/security/data/product/linux/python3-lit.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |
| [python3-lldb](https://patchblox.com/security/data/product/linux/python3-lldb.md) | almalinux 8 | 12.0.1-1.module_el8.4.0+2600+cefb5d4c |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-42574](https://patchblox.com/security/data/cve/CVE-2021-42574.md) | High | clang-libs: LLVM Toolset provides the LLVM compiler infrastructure framework, the Clang compiler for the C and C++ languages, the... | 8.5 | 0.1288 |  |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo