Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2 before 21e1cf688fb0397788c8dd42e1e0b08d58ac5c7b; affected 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2 before c1f8195bf68edd2cef0f18a4cead394075a54b5a; affected 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2 before 838dd342962cef4c320632a5af48d3c31f2f9877; affected 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2 before 4cbc3ba6dc2f746497cade60bcbaa82ae3696689; affected 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2 before e5c440c227ecdc721f2da0dd88b6358afd1031a7; affected 78147ca8b4a9b6cf0e597ddd6bf17959e08376c2 before 3c63d8946e578663b868cb9912dac616ea68bfd0 |
| Linux / Linux | affected 5.11; unaffected 0 before 5.11; unaffected 5.15.174 through 5.15.*; unaffected 6.1.120 through 6.1.*; unaffected 6.6.64 through 6.6.*; unaffected 6.11.11 through 6.11.*; unaffected 6.12.2 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/21e1cf688fb0397788c8dd42e1e0b08d58ac5c7b
- https://git.kernel.org/stable/c/c1f8195bf68edd2cef0f18a4cead394075a54b5a
- https://git.kernel.org/stable/c/838dd342962cef4c320632a5af48d3c31f2f9877
- https://git.kernel.org/stable/c/4cbc3ba6dc2f746497cade60bcbaa82ae3696689
- https://git.kernel.org/stable/c/e5c440c227ecdc721f2da0dd88b6358afd1031a7
- https://git.kernel.org/stable/c/3c63d8946e578663b868cb9912dac616ea68bfd0
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.