# RLSA-2023:0300: kernel-rt security update

RLSA-2023:0300, released January 23, 2023, fixes 6 CVEs in kernel-rt (version 0:5.14.0-162.12.1.rt21.175.el9_1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rlsa-2023-0300
- Platform: Linux
- Released: Jan 23, 2023
- Priority: High (Closes CVE-2022-43945, high severity)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://errata.rockylinux.org/RLSA-2023:0300

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel-rt](https://patchblox.com/security/data/product/linux/kernel-rt.md) | rocky 9 | 0:5.14.0-162.12.1.rt21.175.el9_1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-43945](https://patchblox.com/security/data/cve/CVE-2022-43945.md) | High | bpftool: NFSD: Protect against send buffer overflow in NFSv3 READ (Scott Mayhew) [2143172 2141774] | 7.8 | 0.0546 |  |
| [CVE-2022-30594](https://patchblox.com/security/data/cve/CVE-2022-30594.md) | High | bpftool: ELSA-2023-2951: kernel security, bug fix, and enhancement update (IMPORTANT) | 7.8 | 0.0080 |  |
| [CVE-2022-2959](https://patchblox.com/security/data/cve/CVE-2022-2959.md) | High | bpftool: pipe: Fix missing lock in pipe_resize_ring() (Ian Kent) [2141631 2141632] | 7.8 | 0.0038 |  |
| [CVE-2022-2964](https://patchblox.com/security/data/cve/CVE-2022-2964.md) | High | bpftool: net: usb: ax88179_178a: Fix packet receiving (Jose Ignacio Tornos Martinez) [2142724 2142725] | 7.8 | 0.0031 |  |
| [CVE-2022-4139](https://patchblox.com/security/data/cve/CVE-2022-4139.md) | High | bpftool: drm/i915: fix TLB invalidation for Gen12 video and compute engines (Wander Lairson Costa) [2148149 2148150] | 7.8 | 0.0027 |  |
| [CVE-2022-3077](https://patchblox.com/security/data/cve/CVE-2022-3077.md) | High | bpftool: i2c: ismt: prevent memory corruption in ismt_access() (David Arcari) [2127532 2125582] | 7.8 | 0.0024 |  |

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Data as of 2026-11-11T01:43:54Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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