# CVE-2026-19387: Gstreamer: gstreamer1-plugins-bad-free: gstreamer: heap out-of-bounds write in adpcmdec ima/dvi adpcm decoder > A heap out-of-bounds write in GStreamer's ADPCM decoder allows attackers to execute arbitrary code or cause denial of service via crafted media files. - **Severity:** High 7.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/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:** 18 Sep 2026 - **Also known as:** ALSA-2026:55433, ALSA-2026:56521, CLSA-2026-1787237880, CLSA-2026-1788438390, DEBIAN-CVE-2026-19387, ECHO-0ea6-1c68-a084, GHSA-32fh-qx9x-qfwj, RHSA-2026:55433, RHSA-2026:56521, RHSA-2026:65122, RHSA-2026:65123, RHSA-2026:65124, RHSA-2026:66406, RHSA-2026:66407, RHSA-2026:67151, RHSA-2026:67844, RHSA-2026:67861, RLSA-2026:55433, RLSA-2026:56521, UBUNTU-CVE-2026-19387, USN-8855-1 ## What is CVE-2026-19387? CVE-2026-19387 is a high-severity memory corruption 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 A heap out-of-bounds write vulnerability was found in the GStreamer gst-plugins-bad adpcmdec element when decoding IMA/DVI ADPCM audio. Insufficient validation of the per-block sample count for multi-channel streams allows a crafted WAV file to cause writes beyond the allocated output buffer. This can lead to application crash, denial of service, memory corruption, or potentially arbitrary code execution when untrusted media is processed. Weakness: CWE-787 (Out-of-bounds Write) ## Which versions are affected by CVE-2026-19387? | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `gstreamer1-plugins-bad-free` | AlmaLinux:10 | All versions | 1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-devel` | AlmaLinux:10 | All versions | 1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-libs` | AlmaLinux:10 | All versions | 1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free` | AlmaLinux:8 | All versions | 1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free-devel` | AlmaLinux:8 | All versions | 1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-devel` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-libs` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free-libs-debuginfo` | Red Hat:enterprise_linux:10.2 | All versions | 0:1.26.7-2.el10_2.7 | | `gstreamer1-plugins-bad-free` | Red Hat:enterprise_linux:8::appstream | All versions | 0:1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:enterprise_linux:8::crb | All versions | 0:1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:enterprise_linux:8::crb | All versions | 0:1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free-devel` | Red Hat:enterprise_linux:8::crb | All versions | 0:1.16.1-9.el8_10.2 | | `gstreamer1-plugins-bad-free` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-3.el10_0.7 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-3.el10_0.7 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-3.el10_0.7 | | `gstreamer1-plugins-bad-free-devel` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-3.el10_0.7 | | `gstreamer1-plugins-bad-free-libs` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-3.el10_0.7 | | `gstreamer1-plugins-bad-free-libs-debuginfo` | Red Hat:enterprise_linux_eus:10.0 | All versions | 0:1.24.11-3.el10_0.7 | | `gstreamer1-plugins-bad-free` | Red Hat:rhel_aus:8.4::appstream | All versions | 0:1.16.1-4.el8_4.5 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:rhel_aus:8.4::appstream | All versions | 0:1.16.1-4.el8_4.5 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:rhel_aus:8.4::appstream | All versions | 0:1.16.1-4.el8_4.5 | | `gstreamer1-plugins-bad-free` | Red Hat:rhel_aus:8.6::appstream | All versions | 0:1.16.1-4.el8_6.5 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:rhel_aus:8.6::appstream | All versions | 0:1.16.1-4.el8_6.5 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:rhel_aus:8.6::appstream | All versions | 0:1.16.1-4.el8_6.5 | | `gstreamer1-plugins-bad-free` | Red Hat:rhel_e4s:8.8::appstream | All versions | 0:1.16.1-4.el8_8.5 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:rhel_e4s:8.8::appstream | All versions | 0:1.16.1-4.el8_8.5 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:rhel_e4s:8.8::appstream | All versions | 0:1.16.1-4.el8_8.5 | | `gstreamer1-plugins-bad-free` | Red Hat:rhel_e4s:9.2::appstream | All versions | 0:1.18.4-9.el9_2.6 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:rhel_e4s:9.2::appstream | All versions | 0:1.18.4-9.el9_2.6 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:rhel_e4s:9.2::appstream | All versions | 0:1.18.4-9.el9_2.6 | | `gstreamer1-plugins-bad-free` | Red Hat:rhel_e4s:9.4::appstream | All versions | 0:1.22.1-6.el9_4.7 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:rhel_e4s:9.4::appstream | All versions | 0:1.22.1-6.el9_4.7 | | `gstreamer1-plugins-bad-free-debugsource` | Red Hat:rhel_e4s:9.4::appstream | All versions | 0:1.22.1-6.el9_4.7 | | `gstreamer1-plugins-bad-free` | Red Hat:rhel_els:7 | All versions | 0:1.10.4-8.el7_9 | | `gstreamer1-plugins-bad-free-debuginfo` | Red Hat:rhel_els:7 | All versions | 0:1.10.4-8.el7_9 | ## How do I fix CVE-2026-19387? Apply the vendor's patch. ## Is CVE-2026-19387 being exploited? There is no known exploitation of CVE-2026-19387 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-19387 and fix it if it is affected. What it is: CVE-2026-19387 is a high-severity memory corruption 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-2026-19387 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-2026-19387/ (Markdown: https://insights.sbomify.com/CVE-2026-19387/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19387 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19387 - OSV: https://osv.dev/vulnerability/CVE-2026-19387 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-19387/ Summaries are generated and may contain mistakes; the official description above is the record.