# CVE-2026-19389: Integer overflow in Red Hat Enterprise Linux 10

> Attackers can cause crashes or leak memory by processing crafted media files due to integer overflows in the GStreamer ASF demuxer.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 10 Aug 2026
- **Updated:** 16 Sep 2026
- **Also known as:** ALSA-2026:55435, CLSA-2026-1787309460, DEBIAN-CVE-2026-19389, GHSA-p44h-f9j6-g9ff, RHSA-2026:55435, RHSA-2026:67882, RHSA-2026:67883, RHSA-2026:67930, RHSA-2026:67931, RLSA-2026:55435, UBUNTU-CVE-2026-19389

## What is CVE-2026-19389?

CVE-2026-19389 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Multiple integer overflow and underflow vulnerabilities were found in the GStreamer gst-plugins-ugly ASF demuxer (asfdemux) when parsing header objects from crafted ASF, WMV, or WMA files. Insufficient validation of attacker-controlled length and size values can bypass bounds checks and cause out-of-bounds heap reads. This can result in application crash, denial of service, or limited information disclosure when untrusted media is processed.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2026-19389?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gstreamer1-plugins-ugly-free` | AlmaLinux:10 | All versions | 1.26.7-2.el10_2.2 |
| `gstreamer1-plugins-ugly-free` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.2 |
| `gstreamer1-plugins-ugly-free-debuginfo` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.2 |
| `gstreamer1-plugins-ugly-free-debugsource` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.2 |
| `gstreamer1-plugins-ugly-free` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-1.el10_0.3 |
| `gstreamer1-plugins-ugly-free-debuginfo` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-1.el10_0.3 |
| `gstreamer1-plugins-ugly-free-debugsource` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-1.el10_0.3 |
| `gstreamer1-plugins-ugly-free` | Red Hat:rhel_e4s:9.2::appstream | All versions | 0:1.18.4-4.el9_2 |
| `gstreamer1-plugins-ugly-free-debuginfo` | Red Hat:rhel_e4s:9.2::appstream | All versions | 0:1.18.4-4.el9_2 |
| `gstreamer1-plugins-ugly-free-debugsource` | Red Hat:rhel_e4s:9.2::appstream | All versions | 0:1.18.4-4.el9_2 |
| `gstreamer1-plugins-ugly-free` | Red Hat:rhel_e4s:9.4::appstream | All versions | 0:1.22.1-2.el9_4 |
| `gstreamer1-plugins-ugly-free-debuginfo` | Red Hat:rhel_e4s:9.4::appstream | All versions | 0:1.22.1-2.el9_4 |
| `gstreamer1-plugins-ugly-free-debugsource` | Red Hat:rhel_e4s:9.4::appstream | All versions | 0:1.22.1-2.el9_4 |
| `gstreamer1-plugins-ugly-free` | Red Hat:rhel_eus:9.6::appstream | All versions | 0:1.22.12-4.el9_6.2 |
| `gstreamer1-plugins-ugly-free-debuginfo` | Red Hat:rhel_eus:9.6::appstream | All versions | 0:1.22.12-4.el9_6.2 |
| `gstreamer1-plugins-ugly-free-debugsource` | Red Hat:rhel_eus:9.6::appstream | All versions | 0:1.22.12-4.el9_6.2 |
| `gstreamer1-plugins-ugly-free` | Rocky Linux:10 | All versions | 0:1.26.7-2.el10_2.2 |

## How do I fix CVE-2026-19389?

Apply the vendor's patch.

## Is CVE-2026-19389 being exploited?

There is no known exploitation of CVE-2026-19389 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19389 and fix it if it is affected.

What it is: CVE-2026-19389 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-19389 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. 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-2026-19389/ (Markdown: https://insights.sbomify.com/CVE-2026-19389/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19389
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19389
- OSV: https://osv.dev/vulnerability/CVE-2026-19389

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19389/
Summaries are generated and may contain mistakes; the official description above is the record.