fkie_cve-2023-53539
Vulnerability from fkie_nvd
Published
2025-10-04 16:15
Modified
2025-10-06 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix incomplete state save in rxe_requester If a send packet is dropped by the IP layer in rxe_requester() the call to rxe_xmit_packet() can fail with err == -EAGAIN. To recover, the state of the wqe is restored to the state before the packet was sent so it can be resent. However, the routines that save and restore the state miss a significnt part of the variable state in the wqe, the dma struct which is used to process through the sge table. And, the state is not saved before the packet is built which modifies the dma struct. Under heavy stress testing with many QPs on a fast node sending large messages to a slow node dropped packets are observed and the resent packets are corrupted because the dma struct was not restored. This patch fixes this behavior and allows the test cases to succeed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/255c0e60e1d16874fc151358d94bc8df661600dd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f2a6422287fe29f9343247d77b645100ece0652
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d122db2ff80cd2aed4dcd630befb56b51ddf947
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/70518f3aaf5a059b691867d7d2d46b999319656a
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix incomplete state save in rxe_requester\n\nIf a send packet is dropped by the IP layer in rxe_requester()\nthe call to rxe_xmit_packet() can fail with err == -EAGAIN.\nTo recover, the state of the wqe is restored to the state before\nthe packet was sent so it can be resent. However, the routines\nthat save and restore the state miss a significnt part of the\nvariable state in the wqe, the dma struct which is used to process\nthrough the sge table. And, the state is not saved before the packet\nis built which modifies the dma struct.\n\nUnder heavy stress testing with many QPs on a fast node sending\nlarge messages to a slow node dropped packets are observed and\nthe resent packets are corrupted because the dma struct was not\nrestored. This patch fixes this behavior and allows the test cases\nto succeed."
    }
  ],
  "id": "CVE-2023-53539",
  "lastModified": "2025-10-06T14:56:21.733",
  "metrics": {},
  "published": "2025-10-04T16:15:48.930",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/255c0e60e1d16874fc151358d94bc8df661600dd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2f2a6422287fe29f9343247d77b645100ece0652"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5d122db2ff80cd2aed4dcd630befb56b51ddf947"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/70518f3aaf5a059b691867d7d2d46b999319656a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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