# RLSA-2026:67165: openssl security update

RLSA-2026:67165, released September 15, 2026, fixes 9 CVEs in openssl (version 1:3.5.8-1.el9_8). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rlsa-2026-67165
- Platform: Linux
- Released: Sep 15, 2026
- Priority: High (Closes CVE-2026-18798, high severity)
- CVEs: 9, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://errata.rockylinux.org/RLSA-2026:67165

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [openssl](https://patchblox.com/security/data/product/linux/openssl.md) | rocky 9 | 1:3.5.8-1.el9_8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-18798](https://patchblox.com/security/data/cve/CVE-2026-18798.md) | High | openssl: Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial... | 7.5 | 0.0170 |  |
| [CVE-2026-63076](https://patchblox.com/security/data/cve/CVE-2026-63076.md) | High | Invalid Pointer Dereference in CMP Server via Crafted protectionAlg | 7.5 | 0.0160 |  |
| [CVE-2026-14457](https://patchblox.com/security/data/cve/CVE-2026-14457.md) | High | RPK Server Signature Algorithm Selection Can Dereference a Missing Certificate | 7.5 | 0.0117 |  |
| [CVE-2026-63073](https://patchblox.com/security/data/cve/CVE-2026-63073.md) | High | Untrusted Sender DN Used as Format String in CMP Response Validation | 9.8 | 0.0116 |  |
| [CVE-2026-63072](https://patchblox.com/security/data/cve/CVE-2026-63072.md) | High | Heap Buffer Overflow in CMS Key Unwrapping | 7.5 | 0.0092 |  |
| [CVE-2026-14456](https://patchblox.com/security/data/cve/CVE-2026-14456.md) | High | Unbounded Memory Growth in QUIC Server Incoming Channel Queue | 7.5 | 0.0073 |  |
| [CVE-2026-54874](https://patchblox.com/security/data/cve/CVE-2026-54874.md) | High | Excessive Memory Use Buffering DTLS Records for a Future Epoch | 7.5 | 0.0062 |  |
| [CVE-2026-63074](https://patchblox.com/security/data/cve/CVE-2026-63074.md) | High | CMP Indefinite Cache Growth of ExtraCerts | 7.5 | 0.0059 |  |
| [CVE-2026-63075](https://patchblox.com/security/data/cve/CVE-2026-63075.md) | High | QUIC ACK-only Packet Retention Can Cause Memory Exhaustion | 7.5 | 0.0057 |  |

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Data as of 2026-11-07T18:46:35Z 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

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