# ALSA-2026:50773: Security update for 5 packages

ALSA-2026:50773, released August 5, 2026, fixes 6 CVEs across 5 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/alsa-2026-50773
- Platform: Linux
- Released: Aug 5, 2026
- Priority: High (Closes CVE-2026-47240, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/ALSA-2026:50773

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [ruby4.0](https://patchblox.com/security/data/product/linux/ruby4.0.md) | almalinux 10 | 4.0.6-36.el10_2 |
| [ruby4.0-devel](https://patchblox.com/security/data/product/linux/ruby4.0-devel.md) | almalinux 10 | 4.0.6-36.el10_2 |
| [ruby4.0-doc](https://patchblox.com/security/data/product/linux/ruby4.0-doc.md) | almalinux 10 | 4.0.6-36.el10_2 |
| [ruby4.0-rubygem-mysql2](https://patchblox.com/security/data/product/linux/ruby4.0-rubygem-mysql2.md) | almalinux 10 | 0.5.7-36.el10_2 |
| [ruby4.0-rubygem-pg](https://patchblox.com/security/data/product/linux/ruby4.0-rubygem-pg.md) | almalinux 10 | 1.6.3-36.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-47240](https://patchblox.com/security/data/cve/CVE-2026-47240.md) | High | Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument | 7.3 | 0.0083 |  |
| [CVE-2026-27820](https://patchblox.com/security/data/cve/CVE-2026-27820.md) | High | zlib: Buffer Overflow in Zlib::GzipReader ungetc via large input leads to memory corruption | 7.3 | 0.0056 |  |
| [CVE-2026-42257](https://patchblox.com/security/data/cve/CVE-2026-42257.md) | High | net-imap: Command Injection via "raw" arguments to multiple commands | 7.3 | 0.0043 |  |
| [CVE-2026-47241](https://patchblox.com/security/data/cve/CVE-2026-47241.md) | High | Net::IMAP: Denial of Service via incomplete raw argument validation | 7.3 | 0.0038 |  |
| [CVE-2026-42256](https://patchblox.com/security/data/cve/CVE-2026-42256.md) | High | net-imap: Denial of service via high iteration count for `SCRAM-*` authentication | 7.3 | 0.0030 |  |
| [CVE-2026-47242](https://patchblox.com/security/data/cve/CVE-2026-47242.md) | High | ruby: Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby | 7.3 | 0.0018 |  |

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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