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FKIE_CVE-2026-53083

Vulnerability from fkie_nvd - Published: 2026-06-24 17:17 - Updated: 2026-07-23 18:37
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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/4406942e65ca128c56c67443832988873c21d2e9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71ddb7defc442ab38c53123c384fedbfd8410a15Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b1f7158a86f3cbac4d5a32beb55ca0f8027d44cdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e1ed678855e315f90c70c1723e94157a9a82e660Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "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"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8123B696-3885-4EBA-8C6F-C0DD37A44D96",
              "versionEndExcluding": "6.6.141",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D",
              "versionEndExcluding": "6.12.91",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C",
              "versionEndExcluding": "6.18.33",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4",
              "versionEndExcluding": "7.0.10",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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": "2026-07-23T18:37:35.393",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-06-24T17:17:22.470",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4406942e65ca128c56c67443832988873c21d2e9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/67bdb4b0d26f2d6bbf1798a925ef5a3b9ed7357a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/71ddb7defc442ab38c53123c384fedbfd8410a15"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b1f7158a86f3cbac4d5a32beb55ca0f8027d44cd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e1ed678855e315f90c70c1723e94157a9a82e660"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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