CVE-2026-43469 (GCVE-0-2026-43469)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-08 14:22
VLAI?
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: <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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 15788d1d1077ebe029c48842c738876516d85076 , < 7ea69259a60a364f56cf4aa9e2eafb588d1c762b (git)
Affected: 15788d1d1077ebe029c48842c738876516d85076 , < 8cb6b5d8296b1f99a8d36849901ebabfe3f749db (git)
Affected: 15788d1d1077ebe029c48842c738876516d85076 , < 74c39a47856bddcde7874f2196a00143b5cd0af9 (git)
Affected: 15788d1d1077ebe029c48842c738876516d85076 , < 49f53ee4e25297d886f14e31f355ad1c2735ddfb (git)
Affected: 15788d1d1077ebe029c48842c738876516d85076 , < 8127b5fec04757c2a41ed65bca0b3266968efd3b (git)
Affected: 15788d1d1077ebe029c48842c738876516d85076 , < dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf (git)
Affected: 15788d1d1077ebe029c48842c738876516d85076 , < 7b6275c80a0c81c5f8943272292dfe67730ce849 (git)
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    Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.19 , ≤ 6.18.* (semver)
Unaffected: 6.19.9 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sunrpc/xprtrdma/verbs.c"
          ],
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          "vendor": "Linux",
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              "version": "6.18.19",
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              "operator": "OR"
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      "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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-08T14:22:29.550Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762b"
        },
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          "url": "https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749db"
        },
        {
          "url": "https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9"
        },
        {
          "url": "https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfb"
        },
        {
          "url": "https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3b"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849"
        }
      ],
      "title": "xprtrdma: Decrement re_receiving on the early exit paths",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43469",
    "datePublished": "2026-05-08T14:22:29.550Z",
    "dateReserved": "2026-05-01T14:12:56.011Z",
    "dateUpdated": "2026-05-08T14:22:29.550Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43469",
      "date": "2026-05-10",
      "epss": "0.00024",
      "percentile": "0.0704"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43469\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-08T15:16:59.957\",\"lastModified\":\"2026-05-08T15:16:59.957\",\"vulnStatus\":\"Received\",\"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\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749db\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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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.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.