# CVE-2022-37434: Memory corruption in n/a

> Heap-based buffer overflow in zlib inflate allows attackers to cause denial of service or execute code via crafted gzip headers in applications using inflateGetHeader.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Aug 2022
- **Updated:** 14 Oct 2026
- **Also known as:** ALPINE-CVE-2022-37434, ALSA-2022:7106, ALSA-2022:7314, ALSA-2022:7793, ALSA-2022:8291, AZL-10470, AZL-41380, AZL-42760, AZL-43906, AZL-44121, AZL-44136, AZL-44268, AZL-44358, AZL-44769, AZL-44991, AZL-45096, AZL-45276, CLEANSTART-2026-DU98063, CLSA-2022-1660757579, CLSA-2022-1660758906, CLSA-2022-1660759457, CLSA-2022-1660760405, CLSA-2022-1660762053, CLSA-2022-1661442133, CLSA-2022-1661442999, CLSA-2022-1661443683, CLSA-2022-1661443990, DEBIAN-CVE-2022-37434, DLA-3103-1, DSA-5218-1, ECHO-d8ba-d6c6-385c, GHSA-cfmr-vrgj-vqwv, JLSEC-2026-478, MGASA-2022-0328, OESA-2022-1843, OESA-2022-1853, OESA-2022-1892, OESA-2022-1973, OESA-2022-2003, OESA-2023-1285, RHSA-2022:7106, RHSA-2022:7314, RHSA-2022:7793, RHSA-2022:8291, RHSA-2023:1095, RHSA-2024:0254, RLSA-2022:7106, RLSA-2022:7314, RLSA-2022:7793, RLSA-2022:8291, SUSE-SU-2022:2845-1, SUSE-SU-2022:2846-1, SUSE-SU-2022:2847-1, SUSE-SU-2022:2947-1, UBUNTU-CVE-2022-37434, USN-5570-1, USN-5570-2, USN-5573-1, openSUSE-SU-2022:2947-1, openSUSE-SU-2024:12270-1, openSUSE-SU-2024:12298-1, openSUSE-SU-2024:12843-1, openSUSE-SU-2024:14386-1

## What is CVE-2022-37434?

CVE-2022-37434 is a critical memory corruption vulnerability in Apple Ipados, published on 5 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).

Weakness: CWE-787 (Out-of-bounds Write), CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2022-37434?

It affects 18 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `rsync` | AlmaLinux:8 | All versions | 3.1.3-19.el8 |
| `rsync-daemon` | AlmaLinux:8 | All versions | 3.1.3-19.el8 |
| `zlib` | AlmaLinux:8 | All versions | 1.2.11-19.el8_6 |
| `zlib-devel` | AlmaLinux:8 | All versions | 1.2.11-19.el8_6 |
| `zlib-static` | AlmaLinux:8 | All versions | 1.2.11-19.el8_6 |
| `rsync` | AlmaLinux:9 | All versions | 3.2.3-18.el9 |
| `rsync-daemon` | AlmaLinux:9 | All versions | 3.2.3-18.el9 |
| `zlib` | AlmaLinux:9 | All versions | 1.2.11-32.el9_0 |
| `zlib-devel` | AlmaLinux:9 | All versions | 1.2.11-32.el9_0 |
| `zlib-static` | AlmaLinux:9 | All versions | 1.2.11-32.el9_0 |
| `minizip` | Red Hat:enterprise_linux:7::client | All versions | 0:1.2.7-21.el7_9 |
| `minizip-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:1.2.7-21.el7_9 |
| `zlib` | Red Hat:enterprise_linux:7::client | All versions | 0:1.2.7-21.el7_9 |
| `zlib-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:1.2.7-21.el7_9 |
| `zlib-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:1.2.7-21.el7_9 |
| `zlib-static` | Red Hat:enterprise_linux:7::client | All versions | 0:1.2.7-21.el7_9 |
| `minizip` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.2.7-21.el7_9 |
| `minizip-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.2.7-21.el7_9 |
| `zlib-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.2.7-21.el7_9 |
| `zlib-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.2.7-21.el7_9 |
| `zlib-static` | Red Hat:enterprise_linux:7::computenode | All versions | 0:1.2.7-21.el7_9 |
| `minizip` | Red Hat:enterprise_linux:7::server | All versions | 0:1.2.7-21.el7_9 |
| `minizip-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:1.2.7-21.el7_9 |
| `zlib` | Red Hat:enterprise_linux:7::server | All versions | 0:1.2.7-21.el7_9 |
| `zlib-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:1.2.7-21.el7_9 |
| `zlib-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:1.2.7-21.el7_9 |
| `zlib-static` | Red Hat:enterprise_linux:7::server | All versions | 0:1.2.7-21.el7_9 |
| `minizip` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.2.7-21.el7_9 |
| `minizip-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.2.7-21.el7_9 |
| `zlib` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.2.7-21.el7_9 |
| `zlib-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.2.7-21.el7_9 |
| `zlib-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.2.7-21.el7_9 |
| `zlib-static` | Red Hat:enterprise_linux:7::workstation | All versions | 0:1.2.7-21.el7_9 |
| `rsync` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-19.el8 |
| `rsync-daemon` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-19.el8 |
| `rsync-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-19.el8 |
| `rsync-debugsource` | Red Hat:enterprise_linux:8::baseos | All versions | 0:3.1.3-19.el8 |
| `zlib` | Red Hat:enterprise_linux:8::baseos | All versions | 0:1.2.11-19.el8_6 |
| `zlib-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 0:1.2.11-19.el8_6 |
| `zlib-debugsource` | Red Hat:enterprise_linux:8::baseos | All versions | 0:1.2.11-19.el8_6 |

Products: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Watchos, Debian Debian Linux, Fedoraproject Fedora, Netapp Active Iq Unified Manager, Netapp H300s Firmware, Netapp H500s Firmware, Netapp H700s Firmware, Netapp Hci, Netapp Hci Compute Node, Netapp Management Services for Element Software, Netapp Oncommand Workflow Automation, Netapp Ontap Select Deploy Administration Utility, Netapp Storagegrid, Stormshield Stormshield Network Security, Zlib Zlib.

## How do I fix CVE-2022-37434?

Upgrade to a fixed version.

## Is CVE-2022-37434 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-37434 exists.

Public exploit code:

- u think that it doesnt but it do (github_poc): https://github.com/xen0bit/CVE-2022-37434_poc
- https://github.com/Trinadh465/external_zlib_CVE-2022-37434 (github_poc): https://github.com/Trinadh465/external_zlib_CVE-2022-37434

## Other vulnerabilities in Apple Ipados

- [CVE-2025-43300](https://insights.sbomify.com/CVE-2025-43300/): Apple iOS, iPadOS, and macOS Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24201](https://insights.sbomify.com/CVE-2025-24201/): Apple Multiple Products WebKit Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24085](https://insights.sbomify.com/CVE-2025-24085/): Apple Multiple Products Use-After-Free (critical 10.0, exploited in the wild)
- [CVE-2025-31200](https://insights.sbomify.com/CVE-2025-31200/): Apple Multiple Products Memory Corruption (critical 9.8, exploited in the wild)
- [CVE-2025-31201](https://insights.sbomify.com/CVE-2025-31201/): Apple Multiple Products Arbitrary Read and Write (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-37434 and fix it if it is affected.

What it is: CVE-2022-37434 is a critical memory corruption vulnerability in Apple Ipados, published on 5 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-37434 exists.

Affected product: Apple Ipados. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-37434/ (Markdown: https://insights.sbomify.com/CVE-2022-37434/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-37434
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-37434
- OSV: https://osv.dev/vulnerability/CVE-2022-37434

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-37434/
Summaries are generated and may contain mistakes; the official description above is the record.