# CVE-2022-48303: Memory corruption in n/a

> A one-byte out-of-bounds read in GNU Tar can cause use of uninitialized memory, potentially leading to denial of service when processing crafted V7 archives.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 30 Jan 2023
- **Updated:** 14 Oct 2026
- **Also known as:** ALPINE-CVE-2022-48303, ALSA-2023:0842, ALSA-2023:0959, AZL-37145, CLSA-2023-1677783720, CLSA-2023-1677783889, CLSA-2023-1677783967, CLSA-2023-1677791921, DEBIAN-CVE-2022-48303, GHSA-h2v4-4v4p-2qvc, JLSEC-2026-184, MGASA-2023-0079, OESA-2023-1089, OESA-2023-1103, OESA-2023-1104, OESA-2023-1106, RHSA-2023:0842, RHSA-2023:0959, RHSA-2023:5610, RLSA-2023:0842, RLSA-2023:0959, SUSE-SU-2023:0441-1, SUSE-SU-2023:0463-1, UBUNTU-CVE-2022-48303, USN-5900-1, openSUSE-SU-2024:12744-1

## What is CVE-2022-48303?

CVE-2022-48303 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 30 Jan 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a conditional jump. Exploitation to change the flow of control has not been demonstrated. The issue occurs in from_header in list.c via a V7 archive in which mtime has approximately 11 whitespace characters.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2022-48303?

It affects 2 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `tar` | AlmaLinux:8 | All versions | 2:1.30-6.el8_7.1 |
| `tar` | AlmaLinux:9 | All versions | 2:1.34-6.el9_1 |
| `tar` | Red Hat:enterprise_linux:8::baseos | All versions | 2:1.30-6.el8_7.1 |
| `tar-debuginfo` | Red Hat:enterprise_linux:8::baseos | All versions | 2:1.30-6.el8_7.1 |
| `tar-debugsource` | Red Hat:enterprise_linux:8::baseos | All versions | 2:1.30-6.el8_7.1 |
| `tar` | Red Hat:enterprise_linux:9::baseos | All versions | 2:1.34-6.el9_1 |
| `tar-debuginfo` | Red Hat:enterprise_linux:9::baseos | All versions | 2:1.34-6.el9_1 |
| `tar-debugsource` | Red Hat:enterprise_linux:9::baseos | All versions | 2:1.34-6.el9_1 |
| `tar` | Red Hat:rhel_eus:8.6::baseos | All versions | 2:1.30-5.el8_6.1 |
| `tar-debuginfo` | Red Hat:rhel_eus:8.6::baseos | All versions | 2:1.30-5.el8_6.1 |
| `tar-debugsource` | Red Hat:rhel_eus:8.6::baseos | All versions | 2:1.30-5.el8_6.1 |
| `tar` | Rocky Linux:8 | All versions | 2:1.30-6.el8_7.1 |
| `tar` | Rocky Linux:9 | All versions | 2:1.34-6.el9_1 |
| `tar` | SUSE:Linux Enterprise Micro 5.1 | All versions | 1.34-150000.3.31.1 |
| `tar` | SUSE:Linux Enterprise Micro 5.2 | All versions | 1.34-150000.3.31.1 |
| `tar` | SUSE:Linux Enterprise Micro 5.3 | All versions | 1.34-150000.3.31.1 |
| `tar` | SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 1.34-150000.3.31.1 |
| `tar` | SUSE:Linux Enterprise Real Time 15 SP3 | All versions | 1.34-150000.3.31.1 |
| `tar` | SUSE:Linux Enterprise Server 12 SP5 | All versions | 1.27.1-15.18.1 |
| `tar` | SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 1.27.1-15.18.1 |
| `tar` | openSUSE:Leap 15.4 | All versions | 1.34-150000.3.31.1 |
| `tar` | openSUSE:Leap Micro 5.2 | All versions | 1.34-150000.3.31.1 |
| `tar` | openSUSE:Leap Micro 5.3 | All versions | 1.34-150000.3.31.1 |
| `tar` | openSUSE:Tumbleweed | All versions | 1.34-10.1 |

Products: Fedoraproject Fedora, Gnu Tar.

## How do I fix CVE-2022-48303?

Apply the vendor's patch.

## Is CVE-2022-48303 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-48303 exists.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-48303 and fix it if it is affected.

What it is: CVE-2022-48303 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 30 Jan 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-48303 exists.

Affected product: Fedoraproject Fedora. 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-2022-48303/ (Markdown: https://insights.sbomify.com/CVE-2022-48303/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-48303
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-48303
- OSV: https://osv.dev/vulnerability/CVE-2022-48303

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-48303/
Summaries are generated and may contain mistakes; the official description above is the record.