# CVE-2020-13765: qemu: rom_copy() in hw/core/loader.c in QEMU 4.0 and 4.1.0 does not validate the relationship between two addresses, which...

CVE-2020-13765 is fixed in 17 products on 1 platform, first by qemu 1:2.11+dfsg-1ubuntu7.31, released August 11, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-13765
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0246
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 4, 2020

## Description

rom_copy() in hw/core/loader.c in QEMU 4.0 and 4.1.0 does not validate the relationship between two addresses, which allows attackers to trigger an invalid memory copy operation.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | qemu Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-block-extra Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-block-extra 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-block-extra-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-guest-agent Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-guest-agent 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-guest-agent-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-kvm Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-kvm 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-kvm-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-arm Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-arm 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-arm-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-common Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-common 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-common-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-mips Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-mips 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-mips-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-misc Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-misc 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-misc-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-ppc Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-ppc 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-ppc-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-s390x Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-s390x 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-s390x-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-sparc Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-sparc 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-sparc-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-system-x86 Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-system-x86 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-system-x86-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-user Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-user 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-user-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-user-binfmt Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-user-binfmt 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-user-binfmt-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-user-static Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-user-static 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-user-static-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |
| Linux | qemu-utils Ubuntu 18.04.6 LTS (bionic) | 1:2.11+dfsg-1ubuntu7.31 | [qemu-utils 1:2.11+dfsg-1ubuntu7.31](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-qemu-utils-1-2.11-dfsg-1ubuntu7.31.md) | Aug 11, 2020 |

---

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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.