CVE-2022-49268

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM

Do not call snd_dma_free_pages() when snd_dma_alloc_pages() returns -ENOMEM because it leads to a NULL pointer dereference bug.

The dmesg says:

Detalles técnicos trazas, registros y código del informe original

  [ T1387] sof-audio-pci-intel-tgl 0000:00:1f.3: error: memory alloc failed: -12
  [ T1387] BUG: kernel NULL pointer dereference, address: 0000000000000000
  [ T1387] #PF: supervisor read access in kernel mode
  [ T1387] #PF: error_code(0x0000) - not-present page
  [ T1387] PGD 0 P4D 0
  [ T1387] Oops: 0000 [#1] PREEMPT SMP NOPTI
  [ T1387] CPU: 6 PID: 1387 Comm: alsa-sink-HDA A Tainted: G        W         5.17.0-rc4-superb-owl-00055-g80d47f5de5e3
  [ T1387] Hardware name: HP HP Laptop 14s-dq2xxx/87FD, BIOS F.15 09/15/2021
  [ T1387] RIP: 0010:dma_free_noncontiguous+0x37/0x80
  [ T1387] Code: [... snip ...]
  [ T1387] RSP: 0000:ffffc90002b87770 EFLAGS: 00010246
  [ T1387] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
  [ T1387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888101db30d0
  [ T1387] RBP: 00000000fffffff4 R08: 0000000000000000 R09: 0000000000000000
  [ T1387] R10: 0000000000000000 R11: ffffc90002b874d0 R12: 0000000000000001
  [ T1387] R13: 0000000000058000 R14: ffff888105260c68 R15: ffff888105260828
  [ T1387] FS:  00007f42e2ffd640(0000) GS:ffff888466b80000(0000) knlGS:0000000000000000
  [ T1387] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [ T1387] CR2: 0000000000000000 CR3: 000000014acf0003 CR4: 0000000000770ee0
  [ T1387] PKRU: 55555554
  [ T1387] Call Trace:
  [ T1387]  <TASK>
  [ T1387]  cl_stream_prepare+0x10a/0x120 [snd_sof_intel_hda_common 146addf995b9279ae7f509621078cccbe4f875e1]
  [... snip ...]
  [ T1387]  </TASK>

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.26%
Percentil entre todas las CVEs puntuadas: 16
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-476

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-49268",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
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          "versions": [
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          "programFiles": [
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          "defaultStatus": "unaffected"
        },
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          "vendor": "Linux",
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              "version": "5.2"
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              "version": "0",
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              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
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          "programFiles": [
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          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-26T07:01:03.710",
  "references": [
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      "url": "https://git.kernel.org/stable/c/01df5f7627f1624d6bb0b8c0870a569b32adfbf8",
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      "tags": [
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      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM\n\nDo not call snd_dma_free_pages() when snd_dma_alloc_pages() returns\n-ENOMEM because it leads to a NULL pointer dereference bug.\n\nThe dmesg says:\n\n  [ T1387] sof-audio-pci-intel-tgl 0000:00:1f.3: error: memory alloc failed: -12\n  [ T1387] BUG: kernel NULL pointer dereference, address: 0000000000000000\n  [ T1387] #PF: supervisor read access in kernel mode\n  [ T1387] #PF: error_code(0x0000) - not-present page\n  [ T1387] PGD 0 P4D 0\n  [ T1387] Oops: 0000 [#1] PREEMPT SMP NOPTI\n  [ T1387] CPU: 6 PID: 1387 Comm: alsa-sink-HDA A Tainted: G        W         5.17.0-rc4-superb-owl-00055-g80d47f5de5e3\n  [ T1387] Hardware name: HP HP Laptop 14s-dq2xxx/87FD, BIOS F.15 09/15/2021\n  [ T1387] RIP: 0010:dma_free_noncontiguous+0x37/0x80\n  [ T1387] Code: [... snip ...]\n  [ T1387] RSP: 0000:ffffc90002b87770 EFLAGS: 00010246\n  [ T1387] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n  [ T1387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888101db30d0\n  [ T1387] RBP: 00000000fffffff4 R08: 0000000000000000 R09: 0000000000000000\n  [ T1387] R10: 0000000000000000 R11: ffffc90002b874d0 R12: 0000000000000001\n  [ T1387] R13: 0000000000058000 R14: ffff888105260c68 R15: ffff888105260828\n  [ T1387] FS:  00007f42e2ffd640(0000) GS:ffff888466b80000(0000) knlGS:0000000000000000\n  [ T1387] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  [ T1387] CR2: 0000000000000000 CR3: 000000014acf0003 CR4: 0000000000770ee0\n  [ T1387] PKRU: 55555554\n  [ T1387] Call Trace:\n  [ T1387]  <TASK>\n  [ T1387]  cl_stream_prepare+0x10a/0x120 [snd_sof_intel_hda_common 146addf995b9279ae7f509621078cccbe4f875e1]\n  [... snip ...]\n  [ T1387]  </TASK>"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ASoC: SOF: Intel: Se corrige la desreferencia de puntero NULL cuando ENOMEM No llame a snd_dma_free_pages() cuando snd_dma_alloc_pages() devuelve -ENOMEM porque conduce a un error de desreferencia de puntero NULL. El dmesg dice: [ T1387] sof-audio-pci-intel-tgl 0000:00:1f.3: error: falla de asignación de memoria: -12 [ T1387] ERROR: desreferencia de puntero NULL del kernel, dirección: 0000000000000000 [ T1387] #PF: acceso de lectura del supervisor en modo kernel [ T1387] #PF: error_code(0x0000) - página no presente [ T1387] PGD 0 P4D 0 [ T1387] Oops: 0000 [#1] PREEMPT SMP NOPTI [ T1387] CPU: 6 PID: 1387 Comm: alsa-sink-HDA A Tainted: GW 5.17.0-rc4-superb-owl-00055-g80d47f5de5e3 [ T1387] Nombre del hardware: HP HP Laptop 14s-dq2xxx/87FD, BIOS F.15 15/09/2021 [ T1387] RIP: 0010:dma_free_noncontiguous+0x37/0x80 [ T1387] Código: [... fragmento ...] [ T1387] RSP: 0000:ffffc90002b87770 EFLAGS: 00010246 [ T1387] RAX: 000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ T1387] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888101db30d0 [ T1387] RBP: 00000000ffffff4 R08: 000000000000000 R09: 000000000000000 [ T1387] R10: 000000000000000 R11: ffffc90002b874d0 R12: 000000000000001 [ T1387] R13: 0000000000058000 R14: ffff888105260c68 R15: ffff888105260828 [ T1387] FS: 00007f42e2ffd640(0000) GS:ffff888466b80000(0000) knlGS:0000000000000000 [ T1387] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ T1387] CR2: 0000000000000000 CR3: 000000014acf0003 CR4: 0000000000770ee0 [ T1387] PKRU: 55555554 [ T1387] Rastreo de llamadas: [ T1387]  [ T1387] cl_stream_prepare+0x10a/0x120 [snd_sof_intel_hda_common 146addf995b9279ae7f509621078cccbe4f875e1] [... recorte ...] [ T1387] "
    }
  ],
  "lastModified": "2026-06-17T05:17:33.120",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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}