fkie_cve-2024-50138
Vulnerability from fkie_nvd
Published
2024-11-05 18:15
Modified
2025-11-03 23:16
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: 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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9543375d9b150b2bcf16bb182e6b62309db0888
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.12
linux linux_kernel 6.12
linux linux_kernel 6.12


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E96BC4EA-4F0E-4C4C-A835-CA9717251BD6",
              "versionEndExcluding": "6.1.115",
              "versionStartIncluding": "5.8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A63E3E17-3D76-4FE0-8D3D-AF15451A6D12",
              "versionEndExcluding": "6.11.6",
              "versionStartIncluding": "6.2",
              "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",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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 RCU nest depth: 1, expected: 1 INFO: lockdep is turned off. Preemption disabled at: [] 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 Cambie el spinlock a raw_spinlock_t para evitar este error."
    }
  ],
  "id": "CVE-2024-50138",
  "lastModified": "2025-11-03T23:16:54.197",
  "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": "2024-11-05T18:15:16.337",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5eb34999d118e69a20dc0c6556f315fcb0a1f8d3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f9543375d9b150b2bcf16bb182e6b62309db0888"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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