# CVE-2023-3022: linux: A flaw was found in the IPv6 module of the Linux kernel

CVE-2023-3022 is fixed in 13 products on 1 platform, first by RHSA-2022:1975, released May 10, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-3022
- Priority: Routine
- CVSS: 5.9 (medium)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 10, 2022

## Description

A flaw was found in the IPv6 module of the Linux kernel. The arg.result was not used consistently in fib6_rule_lookup, sometimes holding rt6_info and other times fib6_info. This was not accounted for in other parts of the code where rt6_info was expected unconditionally, potentially leading to a kernel panic in fib6_rule_suppress.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | kernel-rt RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-core RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-debug RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-debug-core RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-debug-devel RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-debug-kvm RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-debug-modules RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-debug-modules-extra RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-devel RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-kvm RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-modules RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | kernel-rt-modules-extra RHEL 8 | 0:4.18.0-372.9.1.rt7.166.el8 | [RHSA-2022:1975](https://patchblox.com/security/data/fix/linux/rhsa-2022-1975.md) | May 10, 2022 |
| Linux | linux Debian 12.15 (bookworm) | 5.2.6-1 | [DEBIAN-CVE-2023-3022](https://patchblox.com/security/data/fix/linux/debian-cve-2023-3022.md) | Jun 19, 2023 |
| Linux | linux Debian 13.5 (trixie) | 5.2.6-1 | [DEBIAN-CVE-2023-3022](https://patchblox.com/security/data/fix/linux/debian-cve-2023-3022.md) | Jun 19, 2023 |
| Linux | linux Debian 14 | 5.2.6-1 | [DEBIAN-CVE-2023-3022](https://patchblox.com/security/data/fix/linux/debian-cve-2023-3022.md) | Jun 19, 2023 |

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