CVE-2025-53151: 
vulnerability analysis and mitigation

An integer overflow vulnerability (CVE-2024-53151) was discovered in the Linux kernel's svcrdma component. The vulnerability was reported by Dan Carpenter and affects Linux kernel versions from 5.11 through 6.12.2. The issue was disclosed on December 24, 2024, and received an official analysis from NIST on January 7, 2025 (NVD).

The vulnerability stems from an integer overflow condition in the svcrdma component, specifically in the xdrcheckwritechunk() function within net/sunrpc/xprtrdma/svcrdmarecvfrom.c. The issue occurs when processing an untrusted u32 segcount variable, where values greater than or equal to SIZEMAX/16 on 32-bit systems can trigger an integer overflow. This overflow affects the calculation 'segcount rpcrdmasegmentmaxsz sizeof(*p)' and some of these values could be accepted by xdrinlinedecode(). The vulnerability has been assigned a CVSS v3.1 Base Score of 5.5 (Medium) with the vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (NVD).

The vulnerability can lead to a denial of service condition on affected systems. The CVSS scoring indicates that while the vulnerability requires local access and low privileges, it can result in high impact to system availability with no direct impact on confidentiality or integrity (NVD).

Multiple patches have been released to address this vulnerability across different kernel versions. The fixes are available through various kernel.org commits, including patches for kernel versions 5.11 through 6.12.2. System administrators should update their Linux kernel to the latest patched version (Kernel Patches).