# CVE-2025-4969: Libsoup: off-by-one out-of-bounds read in find_boundary() in soup-multipart.c

CVE-2025-4969 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2025-4969, released May 21, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-4969
- Priority: Routine
- CVSS: 6.5 (Medium)
- EPSS: 0.0091
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 20, 2025
- Weakness: Out-of-bounds Read
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-4969

## Description

A vulnerability was found in the libsoup package. This flaw stems from itsfailure to correctly verify the termination of multipart HTTP messages.This can allow a remote attacker to send a specially crafted multipart HTTPbody, causing the libsoup-consuming server to read beyond its allocatedmemory boundaries (out-of-bounds read).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gir1.2-soup-2.4 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm6 | [gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-soup-2.4-2.62.1-1ubuntu0.4-esm6.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-2.4 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm1 | [gir1.2-soup-2.4 2.70.0-1ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-soup-2.4-2.70.0-1ubuntu0.5-esm1.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-2.4 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.6 | [gir1.2-soup-2.4 2.74.2-3ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-soup-2.4-2.74.2-3ubuntu0.6.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-2.4 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.6 | [gir1.2-soup-2.4 2.74.3-6ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-soup-2.4-2.74.3-6ubuntu1.6.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-2.4 Ubuntu 25.04 (plucky) | 2.74.3-10ubuntu0.4 | [gir1.2-soup-2.4 2.74.3-10ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-gir1.2-soup-2.4-2.74.3-10ubuntu0.4.md) | Jan 16, 2026 |
| Linux | gir1.2-soup-2.4 Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4 | [gir1.2-soup-2.4 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-soup-2.4-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-2.4 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu4 | [gir1.2-soup-2.4 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-soup-2.4-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-3.0 Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm5 | [gir1.2-soup-3.0 3.0.7-0ubuntu1+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-soup-3.0-3.0.7-0ubuntu1-esm5.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-3.0 Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.5 | [gir1.2-soup-3.0 3.4.4-5ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-soup-3.0-3.4.4-5ubuntu0.5.md) | Sep 26, 2025 |
| Linux | gir1.2-soup-3.0 Ubuntu 25.04 (plucky) | 3.6.5-1ubuntu0.2 | [gir1.2-soup-3.0 3.6.5-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-gir1.2-soup-3.0-3.6.5-1ubuntu0.2.md) | Jan 16, 2026 |
| Linux | gir1.2-soup-3.0 Ubuntu 25.10 (questing) | 3.6.5-3 | [gir1.2-soup-3.0 3.6.5-3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-soup-3.0-3.6.5-3.md) | Sep 26, 2025 |
| Linux | libsoup amzn 2023 | 2.72.0-6.amzn2023.0.8 | [ALAS2023-2025-1310](https://patchblox.com/security/data/fix/linux/alas2023-2025-1310.md) | Dec 8, 2025 |
| Linux | libsoup opensuse-leap 15.6 | 3.4.4-150600.3.10.1 | [SUSE-SU-2025:01812-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01812-1.md) | Jun 4, 2025 |
| Linux | libsoup sles 15.6 | 3.4.4-150600.3.10.1 | [SUSE-SU-2025:01812-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01812-1.md) | Jun 4, 2025 |
| Linux | libsoup sles 15.7 | 3.4.4-150600.3.10.1 | [SUSE-SU-2025:01812-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01812-1.md) | Jun 4, 2025 |
| Linux | libsoup-2.4-1 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.6 | [libsoup-2.4-1 2.74.3-6ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-2.4-1-2.74.3-6ubuntu1.6.md) | Sep 26, 2025 |
| Linux | libsoup-2.4-1 Ubuntu 25.04 (plucky) | 2.74.3-10ubuntu0.4 | [libsoup-2.4-1 2.74.3-10ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup-2.4-1-2.74.3-10ubuntu0.4.md) | Jan 16, 2026 |
| Linux | libsoup-2.4-1 Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4 | [libsoup-2.4-1 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-2.4-1-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup-2.4-1 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu4 | [libsoup-2.4-1 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup-2.4-1-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-0 Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm5 | [libsoup-3.0-0 3.0.7-0ubuntu1+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-3.0-0-3.0.7-0ubuntu1-esm5.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-0 Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.5 | [libsoup-3.0-0 3.4.4-5ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-3.0-0-3.4.4-5ubuntu0.5.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-0 Ubuntu 25.04 (plucky) | 3.6.5-1ubuntu0.2 | [libsoup-3.0-0 3.6.5-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup-3.0-0-3.6.5-1ubuntu0.2.md) | Jan 16, 2026 |
| Linux | libsoup-3.0-0 Ubuntu 25.10 (questing) | 3.6.5-3 | [libsoup-3.0-0 3.6.5-3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-3.0-0-3.6.5-3.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-common Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm5 | [libsoup-3.0-common 3.0.7-0ubuntu1+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-3.0-common-3.0.7-0ubuntu1-esm5.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-common Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.5 | [libsoup-3.0-common 3.4.4-5ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-3.0-common-3.4.4-5ubuntu0.5.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-common Ubuntu 25.04 (plucky) | 3.6.5-1ubuntu0.2 | [libsoup-3.0-common 3.6.5-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup-3.0-common-3.6.5-1ubuntu0.2.md) | Jan 16, 2026 |
| Linux | libsoup-3.0-common Ubuntu 25.10 (questing) | 3.6.5-3 | [libsoup-3.0-common 3.6.5-3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-3.0-common-3.6.5-3.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-tests Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm5 | [libsoup-3.0-tests 3.0.7-0ubuntu1+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-3.0-tests-3.0.7-0ubuntu1-esm5.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-tests Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.5 | [libsoup-3.0-tests 3.4.4-5ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-3.0-tests-3.4.4-5ubuntu0.5.md) | Sep 26, 2025 |
| Linux | libsoup-3.0-tests Ubuntu 25.04 (plucky) | 3.6.5-1ubuntu0.2 | [libsoup-3.0-tests 3.6.5-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup-3.0-tests-3.6.5-1ubuntu0.2.md) | Jan 16, 2026 |
| Linux | libsoup-3.0-tests Ubuntu 25.10 (questing) | 3.6.5-3 | [libsoup-3.0-tests 3.6.5-3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-3.0-tests-3.6.5-3.md) | Sep 26, 2025 |
| Linux | libsoup-debuginfo amzn 2023 | 2.72.0-6.amzn2023.0.8 | [ALAS2023-2025-1310](https://patchblox.com/security/data/fix/linux/alas2023-2025-1310.md) | Dec 8, 2025 |
| Linux | libsoup-debugsource amzn 2023 | 2.72.0-6.amzn2023.0.8 | [ALAS2023-2025-1310](https://patchblox.com/security/data/fix/linux/alas2023-2025-1310.md) | Dec 8, 2025 |
| Linux | libsoup-devel amzn 2023 | 2.72.0-6.amzn2023.0.8 | [ALAS2023-2025-1310](https://patchblox.com/security/data/fix/linux/alas2023-2025-1310.md) | Dec 8, 2025 |
| Linux | libsoup-doc amzn 2023 | 2.72.0-6.amzn2023.0.8 | [ALAS2023-2025-1310](https://patchblox.com/security/data/fix/linux/alas2023-2025-1310.md) | Dec 8, 2025 |
| Linux | libsoup-gnome-2.4-1 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.6 | [libsoup-gnome-2.4-1 2.74.3-6ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-gnome-2.4-1-2.74.3-6ubuntu1.6.md) | Sep 26, 2025 |
| Linux | libsoup-gnome-2.4-1 Ubuntu 25.04 (plucky) | 2.74.3-10ubuntu0.4 | [libsoup-gnome-2.4-1 2.74.3-10ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup-gnome-2.4-1-2.74.3-10ubuntu0.4.md) | Jan 16, 2026 |
| Linux | libsoup-gnome-2.4-1 Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4 | [libsoup-gnome-2.4-1 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-gnome-2.4-1-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup-gnome-2.4-1 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu4 | [libsoup-gnome-2.4-1 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup-gnome-2.4-1-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup-gnome2.4-1 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm6 | [libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsoup-gnome2.4-1-2.62.1-1ubuntu0.4-esm6.md) | Sep 26, 2025 |
| Linux | libsoup-gnome2.4-1 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm1 | [libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup-gnome2.4-1-2.70.0-1ubuntu0.5-esm1.md) | Sep 26, 2025 |
| Linux | libsoup-gnome2.4-1 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.6 | [libsoup-gnome2.4-1 2.74.2-3ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-gnome2.4-1-2.74.2-3ubuntu0.6.md) | Sep 26, 2025 |
| Linux | libsoup2 opensuse-leap 15.6 | 2.74.3-150600.4.9.1 | [SUSE-SU-2025:01802-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01802-1.md) | Jun 3, 2025 |
| Linux | libsoup2 sles 15.6 | 2.74.3-150600.4.9.1 | [SUSE-SU-2025:01802-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01802-1.md) | Jun 3, 2025 |
| Linux | libsoup2 sles 15.7 | 2.74.3-150600.4.9.1 | [SUSE-SU-2025:01802-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-01802-1.md) | Jun 3, 2025 |
| Linux | libsoup2.4-1 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm6 | [libsoup2.4-1 2.62.1-1ubuntu0.4+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsoup2.4-1-2.62.1-1ubuntu0.4-esm6.md) | Sep 26, 2025 |
| Linux | libsoup2.4-1 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm1 | [libsoup2.4-1 2.70.0-1ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup2.4-1-2.70.0-1ubuntu0.5-esm1.md) | Sep 26, 2025 |
| Linux | libsoup2.4-1 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.6 | [libsoup2.4-1 2.74.2-3ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-1-2.74.2-3ubuntu0.6.md) | Sep 26, 2025 |
| Linux | libsoup2.4-common Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.6 | [libsoup2.4-common 2.74.2-3ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-common-2.74.2-3ubuntu0.6.md) | Sep 26, 2025 |
| Linux | libsoup2.4-common Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.6 | [libsoup2.4-common 2.74.3-6ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup2.4-common-2.74.3-6ubuntu1.6.md) | Sep 26, 2025 |
| Linux | libsoup2.4-common Ubuntu 25.04 (plucky) | 2.74.3-10ubuntu0.4 | [libsoup2.4-common 2.74.3-10ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup2.4-common-2.74.3-10ubuntu0.4.md) | Jan 16, 2026 |
| Linux | libsoup2.4-common Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4 | [libsoup2.4-common 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup2.4-common-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup2.4-common Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu4 | [libsoup2.4-common 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup2.4-common-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup2.4-tests Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm1 | [libsoup2.4-tests 2.70.0-1ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup2.4-tests-2.70.0-1ubuntu0.5-esm1.md) | Sep 26, 2025 |
| Linux | libsoup2.4-tests Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.6 | [libsoup2.4-tests 2.74.2-3ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-tests-2.74.2-3ubuntu0.6.md) | Sep 26, 2025 |
| Linux | libsoup2.4-tests Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.6 | [libsoup2.4-tests 2.74.3-6ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup2.4-tests-2.74.3-6ubuntu1.6.md) | Sep 26, 2025 |
| Linux | libsoup2.4-tests Ubuntu 25.04 (plucky) | 2.74.3-10ubuntu0.4 | [libsoup2.4-tests 2.74.3-10ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libsoup2.4-tests-2.74.3-10ubuntu0.4.md) | Jan 16, 2026 |
| Linux | libsoup2.4-tests Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4 | [libsoup2.4-tests 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup2.4-tests-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup2.4-tests Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu4 | [libsoup2.4-tests 2.74.3-10.1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup2.4-tests-2.74.3-10.1ubuntu4.md) | Sep 26, 2025 |
| Linux | libsoup3 Debian 13.5 (trixie) | 3.6.5-2 | [DEBIAN-CVE-2025-4969](https://patchblox.com/security/data/fix/linux/debian-cve-2025-4969.md) | May 21, 2025 |
| Linux | libsoup3 amzn 2023 | 3.6.5-52.amzn2023 | [ALAS2023-2025-1233](https://patchblox.com/security/data/fix/linux/alas2023-2025-1233.md) | Oct 27, 2025 |
| Linux | libsoup3-debuginfo amzn 2023 | 3.6.5-52.amzn2023 | [ALAS2023-2025-1233](https://patchblox.com/security/data/fix/linux/alas2023-2025-1233.md) | Oct 27, 2025 |
| Linux | libsoup3-debugsource amzn 2023 | 3.6.5-52.amzn2023 | [ALAS2023-2025-1233](https://patchblox.com/security/data/fix/linux/alas2023-2025-1233.md) | Oct 27, 2025 |
| Linux | libsoup3-devel amzn 2023 | 3.6.5-52.amzn2023 | [ALAS2023-2025-1233](https://patchblox.com/security/data/fix/linux/alas2023-2025-1233.md) | Oct 27, 2025 |
| Linux | libsoup3-doc amzn 2023 | 3.6.5-52.amzn2023 | [ALAS2023-2025-1233](https://patchblox.com/security/data/fix/linux/alas2023-2025-1233.md) | Oct 27, 2025 |

---

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