# CVE-2026-2369: Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources CVE-2026-2369 is fixed in 14 products on 1 platform, first by SUSE-SU-2026:0657-1, released February 26, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-2369 - Priority: Routine - CVSS: 6.5 (Moderate) - EPSS: 0.0044 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 26, 2026 - Weakness: Integer Underflow (Wrap or Wraparound) - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-2369 ## Description This update for libsoup fixes the following issues: - CVE-2025-32049: denial of Service attack to websocket server (bsc#1240751). - CVE-2026-2369: buffer overread due to integer underflow when handling zero-length resources (bsc#1258120). - CVE-2026-2443: out-of-bounds read when processing specially crafted HTTP Range headers can lead to heap information disclosure to remote attackers (bsc#1258170). - CVE-2026-2708: HTTP request smuggling via duplicate Content-Length headers (bsc#1258508). ## 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+esm7 | [gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-soup-2.4-2.62.1-1ubuntu0.4-esm7.md) | Mar 30, 2026 | | Linux | gir1.2-soup-2.4 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm2 | [gir1.2-soup-2.4 2.70.0-1ubuntu0.5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-soup-2.4-2.70.0-1ubuntu0.5-esm2.md) | Mar 30, 2026 | | Linux | gir1.2-soup-2.4 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.7 | [gir1.2-soup-2.4 2.74.2-3ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-soup-2.4-2.74.2-3ubuntu0.7.md) | Mar 30, 2026 | | Linux | gir1.2-soup-2.4 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.7 | [gir1.2-soup-2.4 2.74.3-6ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-soup-2.4-2.74.3-6ubuntu1.7.md) | Mar 30, 2026 | | Linux | gir1.2-soup-2.4 Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4.1 | [gir1.2-soup-2.4 2.74.3-10.1ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-soup-2.4-2.74.3-10.1ubuntu4.1.md) | Mar 30, 2026 | | Linux | gir1.2-soup-2.4 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm1 | [gir1.2-soup-2.4 2.74.3-10.1ubuntu5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-soup-2.4-2.74.3-10.1ubuntu5-esm1.md) | Mar 30, 2026 | | Linux | libsoup opensuse-leap 15.6 | 3.4.4-150600.3.34.1 | [SUSE-SU-2026:0690-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0690-1.md) | Feb 27, 2026 | | Linux | libsoup opensuse-leap 16.0 | 3.6.6-160000.1.1 | [OPENSUSE-SU-2026:20384-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20384-1.md) | Mar 18, 2026 | | Linux | libsoup sles 15.6 | 3.4.4-150600.3.34.1 | [SUSE-SU-2026:0690-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0690-1.md) | Feb 27, 2026 | | Linux | libsoup sles 15.7 | 3.4.4-150600.3.34.1 | [SUSE-SU-2026:0690-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0690-1.md) | Feb 27, 2026 | | Linux | libsoup sles 16.0 | 3.6.6-160000.1.1 | [SUSE-SU-2026:20902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20902-1.md) | Mar 18, 2026 | | Linux | libsoup-2.4-1 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.7 | [libsoup-2.4-1 2.74.3-6ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-2.4-1-2.74.3-6ubuntu1.7.md) | Mar 30, 2026 | | Linux | libsoup-2.4-1 Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4.1 | [libsoup-2.4-1 2.74.3-10.1ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-2.4-1-2.74.3-10.1ubuntu4.1.md) | Mar 30, 2026 | | Linux | libsoup-2.4-1 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm1 | [libsoup-2.4-1 2.74.3-10.1ubuntu5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup-2.4-1-2.74.3-10.1ubuntu5-esm1.md) | Mar 30, 2026 | | Linux | libsoup-gnome-2.4-1 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.7 | [libsoup-gnome-2.4-1 2.74.3-6ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-gnome-2.4-1-2.74.3-6ubuntu1.7.md) | Mar 30, 2026 | | Linux | libsoup-gnome-2.4-1 Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4.1 | [libsoup-gnome-2.4-1 2.74.3-10.1ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-gnome-2.4-1-2.74.3-10.1ubuntu4.1.md) | Mar 30, 2026 | | Linux | libsoup-gnome-2.4-1 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm1 | [libsoup-gnome-2.4-1 2.74.3-10.1ubuntu5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup-gnome-2.4-1-2.74.3-10.1ubuntu5-esm1.md) | Mar 30, 2026 | | Linux | libsoup-gnome2.4-1 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm7 | [libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsoup-gnome2.4-1-2.62.1-1ubuntu0.4-esm7.md) | Mar 30, 2026 | | Linux | libsoup-gnome2.4-1 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm2 | [libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup-gnome2.4-1-2.70.0-1ubuntu0.5-esm2.md) | Mar 30, 2026 | | Linux | libsoup-gnome2.4-1 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.7 | [libsoup-gnome2.4-1 2.74.2-3ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-gnome2.4-1-2.74.2-3ubuntu0.7.md) | Mar 30, 2026 | | Linux | libsoup2 opensuse-leap 15.6 | 2.74.3-150600.4.27.1 | [SUSE-SU-2026:0657-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0657-1.md) | Feb 26, 2026 | | Linux | libsoup2 opensuse-leap 16.0 | 2.74.3-160000.4.1 | [OPENSUSE-SU-2026:20354-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20354-1.md) | Mar 13, 2026 | | Linux | libsoup2 sles 15.6 | 2.74.3-150600.4.27.1 | [SUSE-SU-2026:0657-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0657-1.md) | Feb 26, 2026 | | Linux | libsoup2 sles 15.7 | 2.74.3-150600.4.27.1 | [SUSE-SU-2026:0657-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0657-1.md) | Feb 26, 2026 | | Linux | libsoup2.4-1 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm7 | [libsoup2.4-1 2.62.1-1ubuntu0.4+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsoup2.4-1-2.62.1-1ubuntu0.4-esm7.md) | Mar 30, 2026 | | Linux | libsoup2.4-1 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm2 | [libsoup2.4-1 2.70.0-1ubuntu0.5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup2.4-1-2.70.0-1ubuntu0.5-esm2.md) | Mar 30, 2026 | | Linux | libsoup2.4-1 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.7 | [libsoup2.4-1 2.74.2-3ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-1-2.74.2-3ubuntu0.7.md) | Mar 30, 2026 | | Linux | libsoup2.4-common Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.7 | [libsoup2.4-common 2.74.2-3ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-common-2.74.2-3ubuntu0.7.md) | Mar 30, 2026 | | Linux | libsoup2.4-common Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.7 | [libsoup2.4-common 2.74.3-6ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup2.4-common-2.74.3-6ubuntu1.7.md) | Mar 30, 2026 | | Linux | libsoup2.4-common Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4.1 | [libsoup2.4-common 2.74.3-10.1ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup2.4-common-2.74.3-10.1ubuntu4.1.md) | Mar 30, 2026 | | Linux | libsoup2.4-common Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm1 | [libsoup2.4-common 2.74.3-10.1ubuntu5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup2.4-common-2.74.3-10.1ubuntu5-esm1.md) | Mar 30, 2026 | | Linux | libsoup2.4-tests Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm2 | [libsoup2.4-tests 2.70.0-1ubuntu0.5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup2.4-tests-2.70.0-1ubuntu0.5-esm2.md) | Mar 30, 2026 | | Linux | libsoup2.4-tests Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.7 | [libsoup2.4-tests 2.74.2-3ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-tests-2.74.2-3ubuntu0.7.md) | Mar 30, 2026 | | Linux | libsoup2.4-tests Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.7 | [libsoup2.4-tests 2.74.3-6ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup2.4-tests-2.74.3-6ubuntu1.7.md) | Mar 30, 2026 | | Linux | libsoup2.4-tests Ubuntu 25.10 (questing) | 2.74.3-10.1ubuntu4.1 | [libsoup2.4-tests 2.74.3-10.1ubuntu4.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup2.4-tests-2.74.3-10.1ubuntu4.1.md) | Mar 30, 2026 | | Linux | libsoup2.4-tests Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm1 | [libsoup2.4-tests 2.74.3-10.1ubuntu5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup2.4-tests-2.74.3-10.1ubuntu5-esm1.md) | Mar 30, 2026 | | Linux | libsoup3 amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 | | Linux | libsoup3-debuginfo amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 | | Linux | libsoup3-debugsource amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 | | Linux | libsoup3-devel amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 | | Linux | libsoup3-doc amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 | --- Data as of 2026-11-08T06:59:42Z UTC. 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