# RHSA-2022:7811: Security update for 2 packages

RHSA-2022:7811, released November 8, 2022, fixes 6 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2022-7811
- Platform: Linux
- Released: Nov 8, 2022
- Priority: High (Closes CVE-2022-25236, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2022:7811

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [mingw32-expat](https://patchblox.com/security/data/product/linux/mingw32-expat.md) | RHEL 8 | 0:2.4.8-1.el8 |
| [mingw64-expat](https://patchblox.com/security/data/product/linux/mingw64-expat.md) | RHEL 8 | 0:2.4.8-1.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-25236](https://patchblox.com/security/data/cve/CVE-2022-25236.md) | High | libxmltok1: xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namesp... | 9.8 | 0.3527 |  |
| [CVE-2022-25235](https://patchblox.com/security/data/cve/CVE-2022-25235.md) | High | libxmltok1: xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a... | 9.8 | 0.0496 |  |
| [CVE-2022-25315](https://patchblox.com/security/data/cve/CVE-2022-25315.md) | High | expat: In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames. | 9.8 | 0.0482 |  |
| [CVE-2022-25314](https://patchblox.com/security/data/cve/CVE-2022-25314.md) | High | expat: In Expat (aka libexpat) before 2.4.5, there is an integer overflow in copyString. | 7.5 | 0.0482 |  |
| [CVE-2022-23990](https://patchblox.com/security/data/cve/CVE-2022-23990.md) | High | expat: Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. | 9.8 | 0.0469 |  |
| [CVE-2022-25313](https://patchblox.com/security/data/cve/CVE-2022-25313.md) | High | expat: In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting dep... | 7.5 | 0.0330 |  |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo