FKIE_CVE-2026-53083

Vulnerability from fkie_nvd - Published: 2026-06-24 17:17 - Updated: 2026-06-24 17:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix RCU stall in bpf_fd_array_map_clear() Add a missing cond_resched() in bpf_fd_array_map_clear() loop. For PROG_ARRAY maps with many entries this loop calls prog_array_map_poke_run() per entry which can be expensive, and without yielding this can cause RCU stalls under load: rcu: Stack dump where RCU GP kthread last ran: CPU: 0 UID: 0 PID: 30932 Comm: kworker/0:2 Not tainted 6.14.0-13195-g967e8def1100 #2 PREEMPT(undef) Workqueue: events prog_array_map_clear_deferred RIP: 0010:write_comp_data+0x38/0x90 kernel/kcov.c:246 Call Trace: <TASK> prog_array_map_poke_run+0x77/0x380 kernel/bpf/arraymap.c:1096 __fd_array_map_delete_elem+0x197/0x310 kernel/bpf/arraymap.c:925 bpf_fd_array_map_clear kernel/bpf/arraymap.c:1000 [inline] prog_array_map_clear_deferred+0x119/0x1b0 kernel/bpf/arraymap.c:1141 process_one_work+0x898/0x19d0 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x770/0x10b0 kernel/workqueue.c:3400 kthread+0x465/0x880 kernel/kthread.c:464 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x19/0x30 arch/x86/entry/entry_64.S:245 </TASK>
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4406942e65ca128c56c67443832988873c21d2e9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71ddb7defc442ab38c53123c384fedbfd8410a15
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e1ed678855e315f90c70c1723e94157a9a82e660
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/arraymap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd",
              "status": "affected",
              "version": "da765a2f599304a81a25e77908d1790414ecdbb6",
              "versionType": "git"
            },
            {
              "lessThan": "71ddb7defc442ab38c53123c384fedbfd8410a15",
              "status": "affected",
              "version": "da765a2f599304a81a25e77908d1790414ecdbb6",
              "versionType": "git"
            },
            {
              "lessThan": "e1ed678855e315f90c70c1723e94157a9a82e660",
              "status": "affected",
              "version": "da765a2f599304a81a25e77908d1790414ecdbb6",
              "versionType": "git"
            },
            {
              "lessThan": "67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a",
              "status": "affected",
              "version": "da765a2f599304a81a25e77908d1790414ecdbb6",
              "versionType": "git"
            },
            {
              "lessThan": "4406942e65ca128c56c67443832988873c21d2e9",
              "status": "affected",
              "version": "da765a2f599304a81a25e77908d1790414ecdbb6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/arraymap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix RCU stall in bpf_fd_array_map_clear()\n\nAdd a missing cond_resched() in bpf_fd_array_map_clear() loop.\n\nFor PROG_ARRAY maps with many entries this loop calls\nprog_array_map_poke_run() per entry which can be expensive, and\nwithout yielding this can cause RCU stalls under load:\n\n  rcu: Stack dump where RCU GP kthread last ran:\n  CPU: 0 UID: 0 PID: 30932 Comm: kworker/0:2 Not tainted 6.14.0-13195-g967e8def1100 #2 PREEMPT(undef)\n  Workqueue: events prog_array_map_clear_deferred\n  RIP: 0010:write_comp_data+0x38/0x90 kernel/kcov.c:246\n  Call Trace:\n   \u003cTASK\u003e\n   prog_array_map_poke_run+0x77/0x380 kernel/bpf/arraymap.c:1096\n   __fd_array_map_delete_elem+0x197/0x310 kernel/bpf/arraymap.c:925\n   bpf_fd_array_map_clear kernel/bpf/arraymap.c:1000 [inline]\n   prog_array_map_clear_deferred+0x119/0x1b0 kernel/bpf/arraymap.c:1141\n   process_one_work+0x898/0x19d0 kernel/workqueue.c:3238\n   process_scheduled_works kernel/workqueue.c:3319 [inline]\n   worker_thread+0x770/0x10b0 kernel/workqueue.c:3400\n   kthread+0x465/0x880 kernel/kthread.c:464\n   ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:153\n   ret_from_fork_asm+0x19/0x30 arch/x86/entry/entry_64.S:245\n   \u003c/TASK\u003e"
    }
  ],
  "id": "CVE-2026-53083",
  "lastModified": "2026-06-24T17:17:22.470",
  "metrics": {},
  "published": "2026-06-24T17:17:22.470",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4406942e65ca128c56c67443832988873c21d2e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/71ddb7defc442ab38c53123c384fedbfd8410a15"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e1ed678855e315f90c70c1723e94157a9a82e660"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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