FKIE_CVE-2026-43469

Vulnerability from fkie_nvd - Published: 2026-05-08 15:16 - Updated: 2026-05-21 14:58
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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: <TASK> __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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749dbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddfPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxprtrdma: Decrement re_receiving on the early exit paths\n\nIn the event that rpcrdma_post_recvs() fails to create a work request\n(due to memory allocation failure, say) or otherwise exits early, we\nshould decrement ep-\u003ere_receiving before returning. Otherwise we will\nhang in rpcrdma_xprt_drain() as re_receiving will never reach zero and\nthe completion will never be triggered.\n\nOn a system with high memory pressure, this can appear as the following\nhung task:\n\n    INFO: task kworker/u385:17:8393 blocked for more than 122 seconds.\n          Tainted: G S          E       6.19.0 #3\n    \"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n    task:kworker/u385:17 state:D stack:0     pid:8393  tgid:8393  ppid:2      task_flags:0x4248060 flags:0x00080000\n    Workqueue: xprtiod xprt_autoclose [sunrpc]\n    Call Trace:\n     \u003cTASK\u003e\n     __schedule+0x48b/0x18b0\n     ? ib_post_send_mad+0x247/0xae0 [ib_core]\n     schedule+0x27/0xf0\n     schedule_timeout+0x104/0x110\n     __wait_for_common+0x98/0x180\n     ? __pfx_schedule_timeout+0x10/0x10\n     wait_for_completion+0x24/0x40\n     rpcrdma_xprt_disconnect+0x444/0x460 [rpcrdma]\n     xprt_rdma_close+0x12/0x40 [rpcrdma]\n     xprt_autoclose+0x5f/0x120 [sunrpc]\n     process_one_work+0x191/0x3e0\n     worker_thread+0x2e3/0x420\n     ? __pfx_worker_thread+0x10/0x10\n     kthread+0x10d/0x230\n     ? __pfx_kthread+0x10/0x10\n     ret_from_fork+0x273/0x2b0\n     ? __pfx_kthread+0x10/0x10\n     ret_from_fork_asm+0x1a/0x30"
    }
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  "id": "CVE-2026-43469",
  "lastModified": "2026-05-21T14:58:32.127",
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
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  "published": "2026-05-08T15:16:59.957",
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      "source": "nvd@nist.gov",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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