CVE-2025-22049 (GCVE-0-2025-22049)
Vulnerability from cvelistv5
Published
2025-04-16 14:12
Modified
2025-05-26 05:17
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: LoongArch: Increase ARCH_DMA_MINALIGN up to 16 ARCH_DMA_MINALIGN is 1 by default, but some LoongArch-specific devices (such as APBDMA) require 16 bytes alignment. When the data buffer length is too small, the hardware may make an error writing cacheline. Thus, it is dangerous to allocate a small memory buffer for DMA. It's always safe to define ARCH_DMA_MINALIGN as L1_CACHE_BYTES but unnecessary (kmalloc() need small memory objects). Therefore, just increase it to 16.
References
Impacted products
Vendor Product Version
Linux Linux Version: fa96b57c149061f71a70bd6582d995f6424fbbf4
Version: fa96b57c149061f71a70bd6582d995f6424fbbf4
Version: fa96b57c149061f71a70bd6582d995f6424fbbf4
Version: fa96b57c149061f71a70bd6582d995f6424fbbf4
Version: fa96b57c149061f71a70bd6582d995f6424fbbf4
Version: fa96b57c149061f71a70bd6582d995f6424fbbf4
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/loongarch/include/asm/cache.h"
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          "vendor": "Linux",
          "versions": [
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              "version": "5.19"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "6.6.87",
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                {
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Increase ARCH_DMA_MINALIGN up to 16\n\nARCH_DMA_MINALIGN is 1 by default, but some LoongArch-specific devices\n(such as APBDMA) require 16 bytes alignment. When the data buffer length\nis too small, the hardware may make an error writing cacheline. Thus, it\nis dangerous to allocate a small memory buffer for DMA. It\u0027s always safe\nto define ARCH_DMA_MINALIGN as L1_CACHE_BYTES but unnecessary (kmalloc()\nneed small memory objects). Therefore, just increase it to 16."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:17:21.616Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a"
        },
        {
          "url": "https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e"
        },
        {
          "url": "https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82"
        },
        {
          "url": "https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720"
        }
      ],
      "title": "LoongArch: Increase ARCH_DMA_MINALIGN up to 16",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22049",
    "datePublished": "2025-04-16T14:12:08.317Z",
    "dateReserved": "2024-12-29T08:45:45.811Z",
    "dateUpdated": "2025-05-26T05:17:21.616Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-22049\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-16T15:15:58.320\",\"lastModified\":\"2025-04-17T20:22:16.240\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nLoongArch: Increase ARCH_DMA_MINALIGN up to 16\\n\\nARCH_DMA_MINALIGN is 1 by default, but some LoongArch-specific devices\\n(such as APBDMA) require 16 bytes alignment. When the data buffer length\\nis too small, the hardware may make an error writing cacheline. Thus, it\\nis dangerous to allocate a small memory buffer for DMA. It\u0027s always safe\\nto define ARCH_DMA_MINALIGN as L1_CACHE_BYTES but unnecessary (kmalloc()\\nneed small memory objects). Therefore, just increase it to 16.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: LoongArch: Aumentar ARCH_DMA_MINALIGN hasta 16. ARCH_DMA_MINALIGN es 1 por defecto, pero algunos dispositivos espec\u00edficos de LoongArch (como APBDMA) requieren una alineaci\u00f3n de 16 bytes. Cuando la longitud del b\u00fafer de datos es demasiado peque\u00f1a, el hardware puede cometer un error al escribir la l\u00ednea de cach\u00e9. Por lo tanto, es peligroso asignar un b\u00fafer de memoria peque\u00f1o para DMA. Siempre es seguro definir ARCH_DMA_MINALIGN como L1_CACHE_BYTES, pero no es necesario (kmalloc() requiere objetos de memoria peque\u00f1os). Por lo tanto, simplemente aum\u00e9ntelo a 16.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1d0def2d1658666ec1f32c9495df60e7411e3c82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/279ec25c2df49fba1cd9488f2ddd045d9cb2112e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4103cfe9dcb88010ae4911d3ff417457d1b6a720\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8b82aea3666f8f2c78f86148d78aea99c46e0f82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bfff341cac7c650e6ca8d10503725992f5564d0f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f39af67f03b564b763b06e44cb960c10a382d54a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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