CVE-2024-26872 Linux CVE debrief

Who should care

Linux kernel maintainers, distribution kernel teams, and operators using SRPT/RDMA functionality should review this issue, especially on systems running affected kernel branches identified by NVD.

Technical summary

The weakness is classified as CWE-416 (use after free). The reported bug is in the RDMA/srpt path: an event handler may be registered before srpt device initialization finishes. If initialization fails or races on the error path, a partially initialized handler can remain active and later dereference freed memory during srpt_refresh_port(). NVD maps the issue to affected Linux kernel ranges including 3.3 through versions before 5.10.214, 5.11 before 5.15.153, 5.16 before 6.1.83, 6.2 before 6.6.23, 6.7 before 6.7.11, and 6.8 before 6.8.2.

Defensive priority

High for systems that use the affected Linux kernel versions and SRPT/RDMA features. The bug is in kernel space and carries high impact in the CVSS vector, but the attack vector is local and the complexity is high.

Recommended defensive actions

• Upgrade to a Linux kernel version that includes the fix or a later stable release beyond the affected ranges listed by NVD.
• If you maintain downstream kernels, verify that the SRPT event handler registration change is included in your backport set.
• Review any deployments using RDMA/srpt and prioritize patching on hosts where local users or kernel-adjacent workloads are present.
• Use vendor advisories and kernel stable patch references to confirm that your shipped kernel build contains the fix.
• Track distribution-specific advisories for kernels not covered directly by mainline or stable version numbers.

Evidence notes

The description of the bug and the remediation come from the official NVD record and its linked Linux kernel patch references. NVD lists CWE-416 and the CVSS vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. The source corpus also includes mitigation/vendor references from git.kernel.org stable commits plus Debian LTS and Siemens advisories. No KEV listing is present in the supplied data.

Official resources