CVE-2024-53151: 
Linux Kernel vulnerability analysis and mitigation

CVE-2024-53151 is an integer overflow vulnerability discovered in the Linux kernel's svcrdma component. The vulnerability was disclosed on December 24, 2024, and affects Linux kernel versions from 5.11 through 6.12.2. The issue stems from improper validation of the segcount parameter in the xdrcheckwrite_chunk function (NVD).

The vulnerability exists in the net/sunrpc/xprtrdma/svcrdmarecvfrom.c file where an untrusted u32 segcount value could cause an integer overflow. On 32-bit systems, any segcount value greater than or equal to SIZEMAX/16 would trigger an integer overflow in the calculation segcount * rpcrdmasegmentmaxsz sizeof(p), which could then be accepted by xdrinline_decode(). The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (NVD).

The vulnerability could 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 availability impact with no direct effect on confidentiality or integrity (NVD).

The vulnerability has been patched in the Linux kernel by implementing a range check on the segcount value before using it in calculations. The fix adds a validation step that ensures segcount does not exceed RPCSVC_MAXPAGES, preventing the integer overflow condition. The patch has been backported to affected stable kernel versions (Kernel Patch).