CVE-2024-53151

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

svcrdma: Address an integer overflow

Dan Carpenter reports:

> Commit 78147ca8b4a9 ("svcrdma: Add a "parsed chunk list" data

> structure") from Jun 22, 2020 (linux-next), leads to the following

> Smatch static checker warning:

>

> net/sunrpc/xprtrdma/svc_rdma_recvfrom.c:498 xdr_check_write_chunk()

> warn: potential user controlled sizeof overflow 'segcount * 4 * 4'

>

> net/sunrpc/xprtrdma/svc_rdma_recvfrom.c

> 488 static bool xdr_check_write_chunk(struct svc_rdma_recv_ctxt *rctxt)

> 489 {

> 490 u32 segcount;

> 491 __be32 *p;

> 492

> 493 if (xdr_stream_decode_u32(&rctxt->rc_stream, &segcount))

> ^^^^^^^^

>

> 494 return false;

> 495

> 496 /* A bogus segcount causes this buffer overflow check to fail. */

> 497 p = xdr_inline_decode(&rctxt->rc_stream,

> --> 498

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References