# CVE-2023-21264: linux: In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access ch...

CVE-2023-21264 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2023-21264, released August 14, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-21264
- Priority: Routine
- CVSS: 6.7 (medium)
- EPSS: 0.0014
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 14, 2023

## Description

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | bpftool-debuginfo amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-debuginfo amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-devel amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-headers amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-libbpf amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-libbpf-devel amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-libbpf-static amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-livepatch-6.1.52-71.125 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-tools amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-tools-debuginfo amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | kernel-tools-devel amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-21264](https://patchblox.com/security/data/fix/linux/debian-cve-2023-21264.md) | Aug 14, 2023 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-21264](https://patchblox.com/security/data/fix/linux/debian-cve-2023-21264.md) | Aug 14, 2023 |
| Linux | perf amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | perf-debuginfo amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | python3-perf amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |
| Linux | python3-perf-debuginfo amzn 2023 | 6.1.52-71.125.amzn2023 | [ALAS2023-2023-349](https://patchblox.com/security/data/fix/linux/alas2023-2023-349.md) | Sep 14, 2023 |

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