xprtrdma: Decrement re_receiving on the early exit paths

{
  "id": "bd001fcb7575eca2397c24fbc8085bfbf42355646e5e66ea32d134ece0cbf9f7",
  "url": "https://osv.dev/vulnerability/CVE-2026-43469",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "xprtrdma: Decrement re_receiving on the early exit paths",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Decrement re_receiving on the early exit paths In the event that rpcrdma_post_recvs() fails to create a work request (due to memory allocation failure, say) or otherwise exits early, we should decrement ep->re_receiving before returning. Otherwise we will hang in rpcrdma_xprt_drain() as re_receiving will never reach zero and the completion will never be triggered. On a system with high memory pressure, this can appear as the following hung task: INFO: task kworker/u385:17:8393 blocked for more than 122 seconds. Tainted: G S E 6.19.0 #3 \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message. task:kworker/u385:17 state:D stack:0 pid:8393 tgid:8393 ppid:2 task_flags:0x4248060 flags:0x00080000 Workqueue: xprtiod xprt_autoclose [sunrpc] Call Trace: __schedule+0x48b/0x18b0 ? ib_post_send_mad+0x247/0xae0 [ib_core] schedule+0x27/0xf0 schedule_timeout+0x104/0x110 __wait_for_common+0x98/0x180 ? __pfx_schedule_timeout+0x10/0x10 wait_for_completion+0x24/0x40 rpcrdma_xprt_disconnect+0x444/0x460 [rpcrdma] xprt_rdma_close+0x12/0x40 [rpcrdma] xprt_autoclose+0x5f/0x120 [sunrpc] process_one_work+0x191/0x3e0 worker_thread+0x2e3/0x420 ? __pfx_worker_thread+0x10/0x10 kthread+0x10d/0x230 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x273/0x2b0 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30",
    "evidence": "osv:CVE-2026-43469",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.203",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.167",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.130",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.78",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.19",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-43469",
      "aliases": [
        "CVE-2026-43469"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "15788d1d1077ebe029c48842c738876516d85076"
                },
                {
                  "fixed": "7ea69259a60a364f56cf4aa9e2eafb588d1c762b"
                },
                {
                  "fixed": "8cb6b5d8296b1f99a8d36849901ebabfe3f749db"
                },
                {
                  "fixed": "74c39a47856bddcde7874f2196a00143b5cd0af9"
                },
                {
                  "fixed": "49f53ee4e25297d886f14e31f355ad1c2735ddfb"
                },
                {
                  "fixed": "8127b5fec04757c2a41ed65bca0b3266968efd3b"
                },
                {
                  "fixed": "dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf"
                },
                {
                  "fixed": "7b6275c80a0c81c5f8943272292dfe67730ce849"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43469.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.13.0"
                },
                {
                  "fixed": "5.15.203"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.167"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.130"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.78"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.19"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "6.19.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43469.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.513486142Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfb",
        "https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9",
        "https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849",
        "https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762b",
        "https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3b",
        "https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749db",
        "https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43469.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43469",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43469.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43469",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498681,
  "published_at": "2026-05-08T14:22:29.55+00:00"
}