CVE-2024-38544
A critical flaw in the Linux kernel’s RDMA/rxe component can cause a segmentation fault when handling response packets. The bug occurs because the kernel may free a packet before it is fully processed, leading to a crash. The issue has been fixed by reordering packet handling logic.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel users, especially those running RDMA/rxe drivers, on any kernel version before the patch. System administrators and users of Linux servers that use RDMA are typical affected parties.
Real-world impact
An attacker could crash the kernel, causing a denial of service on the affected system.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability can be exploited remotely with no authentication or user interaction, and it can completely compromise confidentiality, integrity, and availability. The high impact and ease of exploitation make it a critical threat.
What to do about it
- 01Upgrade your Linux kernel to a version that includes the fix for CVE-2024-38544.
- 02Reboot the system to load the new kernel.
NVD description
Timeline
- Jun 19, 2024 · Jun 19, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 5, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
How it’s attacked
References & advisories
- git.kernel.org/stable/c/21b4c6d4d89030fd46…patch
- git.kernel.org/stable/c/2b23b6097303ed0ba5…patch
- git.kernel.org/stable/c/30df4bef8b8e183333…patch
- git.kernel.org/stable/c/bbad88f111a1829f36…patch
- git.kernel.org/stable/c/c91fb72a2ca6480d8d…patch
- git.kernel.org/stable/c/de5a059e36657442b5…patch
- git.kernel.org/stable/c/e0e14dd35d4242340c…patch
- git.kernel.org/stable/c/faa8d0ecf6c9c7c2ac…patch
- lists.debian.org/debian-lts-announce/2025/03…