CVE-2024-53151 (GCVE-0-2024-53151)
Vulnerability from cvelistv5
Published
2024-12-24 11:28
Modified
2026-05-11 20:51
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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 segcount * rpcrdma_segment_maxsz * sizeof(*p)); > > > segcount is an untrusted u32. On 32bit systems anything >= SIZE_MAX / 16 will > have an integer overflow and some those values will be accepted by > xdr_inline_decode().
References
Impacted products
Vendor Product Version
Linux Linux Version: 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2
Version: 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2
Version: 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2
Version: 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2
Version: 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2
Version: 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsvcrdma: Address an integer overflow\n\nDan Carpenter reports:\n\u003e Commit 78147ca8b4a9 (\"svcrdma: Add a \"parsed chunk list\" data\n\u003e structure\") from Jun 22, 2020 (linux-next), leads to the following\n\u003e Smatch static checker warning:\n\u003e\n\u003e\tnet/sunrpc/xprtrdma/svc_rdma_recvfrom.c:498 xdr_check_write_chunk()\n\u003e\twarn: potential user controlled sizeof overflow \u0027segcount * 4 * 4\u0027\n\u003e\n\u003e net/sunrpc/xprtrdma/svc_rdma_recvfrom.c\n\u003e     488 static bool xdr_check_write_chunk(struct svc_rdma_recv_ctxt *rctxt)\n\u003e     489 {\n\u003e     490         u32 segcount;\n\u003e     491         __be32 *p;\n\u003e     492\n\u003e     493         if (xdr_stream_decode_u32(\u0026rctxt-\u003erc_stream, \u0026segcount))\n\u003e                                                               ^^^^^^^^\n\u003e\n\u003e     494                 return false;\n\u003e     495\n\u003e     496         /* A bogus segcount causes this buffer overflow check to fail. */\n\u003e     497         p = xdr_inline_decode(\u0026rctxt-\u003erc_stream,\n\u003e --\u003e 498                               segcount * rpcrdma_segment_maxsz * sizeof(*p));\n\u003e\n\u003e\n\u003e segcount is an untrusted u32.  On 32bit systems anything \u003e= SIZE_MAX / 16 will\n\u003e have an integer overflow and some those values will be accepted by\n\u003e xdr_inline_decode()."
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