# RLSA-2022:5095: Security update for 4 packages

RLSA-2022:5095, released June 16, 2022, fixes 8 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rlsa-2022-5095
- Platform: Linux
- Released: Jun 16, 2022
- Priority: High (Closes CVE-2022-28733, high severity)
- CVEs: 8, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://errata.rockylinux.org/RLSA-2022:5095

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [grub2](https://patchblox.com/security/data/product/linux/grub2.md) | rocky 8 | 1:2.02-123.el8_6.8 |
| [mokutil](https://patchblox.com/security/data/product/linux/mokutil.md) | rocky 8 | 1:0.3.0-11.el8_6.1 |
| [shim](https://patchblox.com/security/data/product/linux/shim.md) | rocky 8 | 0:15.6-1.el8 |
| [shim-unsigned-x64](https://patchblox.com/security/data/product/linux/shim-unsigned-x64.md) | rocky 8 | 0:15.6-1.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-28733](https://patchblox.com/security/data/cve/CVE-2022-28733.md) | High | grub-efi-amd64: Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in gru... | 8.1 | 0.0127 |  |
| [CVE-2022-28734](https://patchblox.com/security/data/cve/CVE-2022-28734.md) | High | grub2-common: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable... | 8.1 | 0.0112 |  |
| [CVE-2021-3696](https://patchblox.com/security/data/cve/CVE-2021-3696.md) | High | grub2-common: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable... | 8.1 | 0.0048 |  |
| [CVE-2021-3695](https://patchblox.com/security/data/cve/CVE-2021-3695.md) | High | grub2-common: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable... | 8.1 | 0.0048 |  |
| [CVE-2021-3697](https://patchblox.com/security/data/cve/CVE-2021-3697.md) | High | grub2-common: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable... | 8.1 | 0.0047 |  |
| [CVE-2022-28737](https://patchblox.com/security/data/cve/CVE-2022-28737.md) | High | shim: There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle... | 8.1 | 0.0033 |  |
| [CVE-2022-28735](https://patchblox.com/security/data/cve/CVE-2022-28735.md) | High | grub-efi-arm64: The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems | 8.1 | 0.0032 |  |
| [CVE-2022-28736](https://patchblox.com/security/data/cve/CVE-2022-28736.md) | High | grub-efi-arm64: There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up... | 8.1 | 0.0029 |  |

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Data as of 2026-11-08T00:53:09Z 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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