# CVE-2026-100236: Dpdk: dpdk: heap out-of-bounds read/write in gso header copy CVE-2026-100236 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-100236, released October 21, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-100236 - Priority: High - CVSS: 8.8 (Important) - EPSS: 0.0040 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 14, 2026 - Weakness: Out-of-bounds Write - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100236 ## Description A flaw was found in the DPDK GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | dpdk Debian 13.5 (trixie) | 24.11.8-0+deb13u1 | [DEBIAN-CVE-2026-100236](https://patchblox.com/security/data/fix/linux/debian-cve-2026-100236.md) | Oct 21, 2026 | | Linux | dpdk Debian 14 | 25.11.4-1 | [DEBIAN-CVE-2026-100236](https://patchblox.com/security/data/fix/linux/debian-cve-2026-100236.md) | Oct 21, 2026 | | Linux | dpdk RHEL 10 | 25.11-2.el10_2 | [RHSA-2026:94630](https://patchblox.com/security/data/fix/linux/rhsa-2026-94630.md) | Nov 4, 2026 | | Linux | dpdk RHEL 9 | 2:25.11-2.el9_8 | [RHSA-2026:94629](https://patchblox.com/security/data/fix/linux/rhsa-2026-94629.md) | Nov 4, 2026 | | Linux | dpdk almalinux 10 | 2:25.11-2.el10_2 | [ALSA-2026:94630](https://patchblox.com/security/data/fix/linux/alsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk almalinux 9 | 2:25.11-2.el9_8 | [ALSA-2026:94629](https://patchblox.com/security/data/fix/linux/alsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk ol 10 | 2:25.11-2.el10_2 | [ELSA-2026-94630](https://patchblox.com/security/data/fix/linux/elsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk ol 9 | 2:25.11-2.el9_8 | [ELSA-2026-94629](https://patchblox.com/security/data/fix/linux/elsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk rocky 10 | 2:25.11-2.el10_2 | [RLSA-2026:94630](https://patchblox.com/security/data/fix/linux/rlsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk rocky 9 | 2:25.11-2.el9_8 | [RLSA-2026:94629](https://patchblox.com/security/data/fix/linux/rlsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk-devel RHEL 9 | 2:25.11-2.el9_8 | [RHSA-2026:94629](https://patchblox.com/security/data/fix/linux/rhsa-2026-94629.md) | Nov 4, 2026 | | Linux | dpdk-devel almalinux 10 | 2:25.11-2.el10_2 | [ALSA-2026:94630](https://patchblox.com/security/data/fix/linux/alsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk-devel almalinux 9 | 2:25.11-2.el9_8 | [ALSA-2026:94629](https://patchblox.com/security/data/fix/linux/alsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk-devel ol 10 | 2:25.11-2.el10_2 | [ELSA-2026-94630](https://patchblox.com/security/data/fix/linux/elsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk-devel ol 9 | 2:25.11-2.el9_8 | [ELSA-2026-94629](https://patchblox.com/security/data/fix/linux/elsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk-doc RHEL 9 | 2:25.11-2.el9_8 | [RHSA-2026:94629](https://patchblox.com/security/data/fix/linux/rhsa-2026-94629.md) | Nov 4, 2026 | | Linux | dpdk-doc almalinux 10 | 2:25.11-2.el10_2 | [ALSA-2026:94630](https://patchblox.com/security/data/fix/linux/alsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk-doc almalinux 9 | 2:25.11-2.el9_8 | [ALSA-2026:94629](https://patchblox.com/security/data/fix/linux/alsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk-doc ol 10 | 2:25.11-2.el10_2 | [ELSA-2026-94630](https://patchblox.com/security/data/fix/linux/elsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk-doc ol 9 | 2:25.11-2.el9_8 | [ELSA-2026-94629](https://patchblox.com/security/data/fix/linux/elsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk-tools RHEL 9 | 2:25.11-2.el9_8 | [RHSA-2026:94629](https://patchblox.com/security/data/fix/linux/rhsa-2026-94629.md) | Nov 4, 2026 | | Linux | dpdk-tools almalinux 10 | 2:25.11-2.el10_2 | [ALSA-2026:94630](https://patchblox.com/security/data/fix/linux/alsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk-tools almalinux 9 | 2:25.11-2.el9_8 | [ALSA-2026:94629](https://patchblox.com/security/data/fix/linux/alsa-2026-94629.md) | Nov 7, 2026 | | Linux | dpdk-tools ol 10 | 2:25.11-2.el10_2 | [ELSA-2026-94630](https://patchblox.com/security/data/fix/linux/elsa-2026-94630.md) | Nov 7, 2026 | | Linux | dpdk-tools ol 9 | 2:25.11-2.el9_8 | [ELSA-2026-94629](https://patchblox.com/security/data/fix/linux/elsa-2026-94629.md) | Nov 7, 2026 | --- Data as of 2026-11-10T01:44:33Z UTC. 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