cve-2024-50138
Vulnerability from cvelistv5
Published
2024-11-05 17:11
Modified
2024-12-19 09:33
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Use raw_spinlock_t in ringbuf The function __bpf_ringbuf_reserve is invoked from a tracepoint, which disables preemption. Using spinlock_t in this context can lead to a "sleep in atomic" warning in the RT variant. This issue is illustrated in the example below: BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 556208, name: test_progs preempt_count: 1, expected: 0 RCU nest depth: 1, expected: 1 INFO: lockdep is turned off. Preemption disabled at: [<ffffd33a5c88ea44>] migrate_enable+0xc0/0x39c CPU: 7 PID: 556208 Comm: test_progs Tainted: G Hardware name: Qualcomm SA8775P Ride (DT) Call trace: dump_backtrace+0xac/0x130 show_stack+0x1c/0x30 dump_stack_lvl+0xac/0xe8 dump_stack+0x18/0x30 __might_resched+0x3bc/0x4fc rt_spin_lock+0x8c/0x1a4 __bpf_ringbuf_reserve+0xc4/0x254 bpf_ringbuf_reserve_dynptr+0x5c/0xdc bpf_prog_ac3d15160d62622a_test_read_write+0x104/0x238 trace_call_bpf+0x238/0x774 perf_call_bpf_enter.isra.0+0x104/0x194 perf_syscall_enter+0x2f8/0x510 trace_sys_enter+0x39c/0x564 syscall_trace_enter+0x220/0x3c0 do_el0_svc+0x138/0x1dc el0_svc+0x54/0x130 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x17c/0x180 Switch the spinlock to raw_spinlock_t to avoid this error.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5eb34999d118e69a20dc0c6556f315fcb0a1f8d3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b62645b09f870d70c7910e7550289d444239a46Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca30e682e5d6de44d12c4610767811c9a21d59baPatch
Impacted products
Vendor Product Version
Linux Linux Version: 457f44363a8894135c85b7a9afd2bd8196db24ab
Version: 457f44363a8894135c85b7a9afd2bd8196db24ab
Version: 457f44363a8894135c85b7a9afd2bd8196db24ab
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   Linux Linux Version: 5.8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/ringbuf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5eb34999d118e69a20dc0c6556f315fcb0a1f8d3",
              "status": "affected",
              "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
              "versionType": "git"
            },
            {
              "lessThan": "ca30e682e5d6de44d12c4610767811c9a21d59ba",
              "status": "affected",
              "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
              "versionType": "git"
            },
            {
              "lessThan": "8b62645b09f870d70c7910e7550289d444239a46",
              "status": "affected",
              "version": "457f44363a8894135c85b7a9afd2bd8196db24ab",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/ringbuf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.115",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use raw_spinlock_t in ringbuf\n\nThe function __bpf_ringbuf_reserve is invoked from a tracepoint, which\ndisables preemption. Using spinlock_t in this context can lead to a\n\"sleep in atomic\" warning in the RT variant. This issue is illustrated\nin the example below:\n\nBUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48\nin_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 556208, name: test_progs\npreempt_count: 1, expected: 0\nRCU nest depth: 1, expected: 1\nINFO: lockdep is turned off.\nPreemption disabled at:\n[\u003cffffd33a5c88ea44\u003e] migrate_enable+0xc0/0x39c\nCPU: 7 PID: 556208 Comm: test_progs Tainted: G\nHardware name: Qualcomm SA8775P Ride (DT)\nCall trace:\n dump_backtrace+0xac/0x130\n show_stack+0x1c/0x30\n dump_stack_lvl+0xac/0xe8\n dump_stack+0x18/0x30\n __might_resched+0x3bc/0x4fc\n rt_spin_lock+0x8c/0x1a4\n __bpf_ringbuf_reserve+0xc4/0x254\n bpf_ringbuf_reserve_dynptr+0x5c/0xdc\n bpf_prog_ac3d15160d62622a_test_read_write+0x104/0x238\n trace_call_bpf+0x238/0x774\n perf_call_bpf_enter.isra.0+0x104/0x194\n perf_syscall_enter+0x2f8/0x510\n trace_sys_enter+0x39c/0x564\n syscall_trace_enter+0x220/0x3c0\n do_el0_svc+0x138/0x1dc\n el0_svc+0x54/0x130\n el0t_64_sync_handler+0x134/0x150\n el0t_64_sync+0x17c/0x180\n\nSwitch the spinlock to raw_spinlock_t to avoid this error."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:33:57.934Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5eb34999d118e69a20dc0c6556f315fcb0a1f8d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca30e682e5d6de44d12c4610767811c9a21d59ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b62645b09f870d70c7910e7550289d444239a46"
        }
      ],
      "title": "bpf: Use raw_spinlock_t in ringbuf",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50138",
    "datePublished": "2024-11-05T17:11:01.518Z",
    "dateReserved": "2024-10-21T19:36:19.956Z",
    "dateUpdated": "2024-12-19T09:33:57.934Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-50138\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-05T18:15:16.337\",\"lastModified\":\"2024-11-08T14:27:41.160\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Use raw_spinlock_t in ringbuf\\n\\nThe function __bpf_ringbuf_reserve is invoked from a tracepoint, which\\ndisables preemption. Using spinlock_t in this context can lead to a\\n\\\"sleep in atomic\\\" warning in the RT variant. This issue is illustrated\\nin the example below:\\n\\nBUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48\\nin_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 556208, name: test_progs\\npreempt_count: 1, expected: 0\\nRCU nest depth: 1, expected: 1\\nINFO: lockdep is turned off.\\nPreemption disabled at:\\n[\u003cffffd33a5c88ea44\u003e] migrate_enable+0xc0/0x39c\\nCPU: 7 PID: 556208 Comm: test_progs Tainted: G\\nHardware name: Qualcomm SA8775P Ride (DT)\\nCall trace:\\n dump_backtrace+0xac/0x130\\n show_stack+0x1c/0x30\\n dump_stack_lvl+0xac/0xe8\\n dump_stack+0x18/0x30\\n __might_resched+0x3bc/0x4fc\\n rt_spin_lock+0x8c/0x1a4\\n __bpf_ringbuf_reserve+0xc4/0x254\\n bpf_ringbuf_reserve_dynptr+0x5c/0xdc\\n bpf_prog_ac3d15160d62622a_test_read_write+0x104/0x238\\n trace_call_bpf+0x238/0x774\\n perf_call_bpf_enter.isra.0+0x104/0x194\\n perf_syscall_enter+0x2f8/0x510\\n trace_sys_enter+0x39c/0x564\\n syscall_trace_enter+0x220/0x3c0\\n do_el0_svc+0x138/0x1dc\\n el0_svc+0x54/0x130\\n el0t_64_sync_handler+0x134/0x150\\n el0t_64_sync+0x17c/0x180\\n\\nSwitch the spinlock to raw_spinlock_t to avoid this error.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: uso de raw_spinlock_t en ringbuf La funci\u00f3n __bpf_ringbuf_reserve se invoca desde un punto de seguimiento, lo que desactiva la preempci\u00f3n. El uso de spinlock_t en este contexto puede provocar una advertencia de \\\"suspensi\u00f3n en at\u00f3mico\\\" en la variante RT. Este problema se ilustra en el siguiente ejemplo: ERROR: funci\u00f3n de suspensi\u00f3n llamada desde un contexto no v\u00e1lido en kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 556208, name: test_progs preempt_count: 1, expected: 0 Profundidad de anidaci\u00f3n de RCU: 1, expected: 1 INFORMACI\u00d3N: lockdep est\u00e1 desactivado. Prelaci\u00f3n deshabilitada en: [] migrants_enable+0xc0/0x39c CPU: 7 PID: 556208 Comm: test_progs Contaminado: G Nombre del hardware: Qualcomm SA8775P Ride (DT) Rastreo de llamadas: dump_backtrace+0xac/0x130 show_stack+0x1c/0x30 dump_stack_lvl+0xac/0xe8 dump_stack+0x18/0x30 __might_resched+0x3bc/0x4fc rt_spin_lock+0x8c/0x1a4 __bpf_ringbuf_reserve+0xc4/0x254 bpf_ringbuf_reserve_dynptr+0x5c/0xdc Cambie el bloqueo de giro a raw_spinlock_t para evitar este error.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.8\",\"versionEndExcluding\":\"6.1.115\",\"matchCriteriaId\":\"E96BC4EA-4F0E-4C4C-A835-CA9717251BD6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.11.6\",\"matchCriteriaId\":\"A63E3E17-3D76-4FE0-8D3D-AF15451A6D12\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5eb34999d118e69a20dc0c6556f315fcb0a1f8d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b62645b09f870d70c7910e7550289d444239a46\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca30e682e5d6de44d12c4610767811c9a21d59ba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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