# RHSA-2023:4531: Security update for 3 packages

RHSA-2023:4531, released August 8, 2023, fixes 3 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2023-4531
- Platform: Linux
- Released: Aug 8, 2023
- Priority: High (Closes CVE-2022-42896, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2023:4531

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kpatch-patch-4_18_0-477_10_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-477-10-1.md) | RHEL 8 | 0:1-2.el8_8 |
| [kpatch-patch-4_18_0-477_13_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-477-13-1.md) | RHEL 8 | 0:1-1.el8_8 |
| [kpatch-patch-4_18_0-477_15_1](https://patchblox.com/security/data/product/linux/kpatch-patch-4-18-0-477-15-1.md) | RHEL 8 | 0:1-1.el8_8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-42896](https://patchblox.com/security/data/cve/CVE-2022-42896.md) | High | bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: u... | 8.8 | 0.0246 |  |
| [CVE-2023-1829](https://patchblox.com/security/data/cve/CVE-2023-1829.md) | High | linux: A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve... | 8.1 | 0.0106 |  |
| [CVE-2023-1281](https://patchblox.com/security/data/cve/CVE-2023-1281.md) | High | linux: Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The... | 8.1 | 0.0030 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo