# RHSA-2026:67165: Security update for 4 packages

RHSA-2026:67165, released September 19, 2026, fixes 10 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-67165
- Platform: Linux
- Released: Sep 19, 2026
- Priority: Urgent (Closes CVE-2026-75803, rated Critical)
- CVEs: 10, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:67165

## Applies to

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

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-75803](https://patchblox.com/security/data/cve/CVE-2026-75803.md) | Urgent | openssl: Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without verifying... | 9.1 | 0.0025 |  |
| [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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