CVE-2025-21747

{
  "id": "CVE-2025-21747",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "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
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4e29cc7c5c673299cfbaf4982fc8b6a72c9f706f",
              "lessThan": "589839379031cce220c9cab9f27cb5477195067e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4e29cc7c5c673299cfbaf4982fc8b6a72c9f706f",
              "lessThan": "fd39c41bcd82d5ebaaebadb944eab5598c668a90",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/ast/ast_dp.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.13.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.13.*"
            },
            {
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/ast/ast_dp.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-27T03:15:15.337",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/589839379031cce220c9cab9f27cb5477195067e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fd39c41bcd82d5ebaaebadb944eab5598c668a90",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/ast: astdp: Fix timeout for enabling video signal\n\nThe ASTDP transmitter sometimes takes up to 1 second for enabling the\nvideo signal, while the timeout is only 200 msec. This results in a\nkernel error message. Increase the timeout to 1 second. An example\nof the error message is shown below.\n\n[  697.084433] ------------[ cut here ]------------\n[  697.091115] ast 0000:02:00.0: [drm] drm_WARN_ON(!__ast_dp_wait_enable(ast, enabled))\n[  697.091233] WARNING: CPU: 1 PID: 160 at drivers/gpu/drm/ast/ast_dp.c:232 ast_dp_set_enable+0x123/0x140 [ast]\n[...]\n[  697.272469] RIP: 0010:ast_dp_set_enable+0x123/0x140 [ast]\n[...]\n[  697.415283] Call Trace:\n[  697.420727]  <TASK>\n[  697.425908]  ? show_trace_log_lvl+0x196/0x2c0\n[  697.433304]  ? show_trace_log_lvl+0x196/0x2c0\n[  697.440693]  ? drm_atomic_helper_commit_modeset_enables+0x30a/0x470\n[  697.450115]  ? ast_dp_set_enable+0x123/0x140 [ast]\n[  697.458059]  ? __warn.cold+0xaf/0xca\n[  697.464713]  ? ast_dp_set_enable+0x123/0x140 [ast]\n[  697.472633]  ? report_bug+0x134/0x1d0\n[  697.479544]  ? handle_bug+0x58/0x90\n[  697.486127]  ? exc_invalid_op+0x13/0x40\n[  697.492975]  ? asm_exc_invalid_op+0x16/0x20\n[  697.500224]  ? preempt_count_sub+0x14/0xc0\n[  697.507473]  ? ast_dp_set_enable+0x123/0x140 [ast]\n[  697.515377]  ? ast_dp_set_enable+0x123/0x140 [ast]\n[  697.523227]  drm_atomic_helper_commit_modeset_enables+0x30a/0x470\n[  697.532388]  drm_atomic_helper_commit_tail+0x58/0x90\n[  697.540400]  ast_mode_config_helper_atomic_commit_tail+0x30/0x40 [ast]\n[  697.550009]  commit_tail+0xfe/0x1d0\n[  697.556547]  drm_atomic_helper_commit+0x198/0x1c0\n\nThis is a cosmetical problem. Enabling the video signal still works\neven with the error message. The problem has always been present, but\nonly recent versions of the ast driver warn about missing the timeout."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/ast: astdp: Se ha solucionado el problema del tiempo de espera para habilitar la señal de vídeo. El transmisor ASTDP a veces tarda hasta 1 segundo en habilitar la señal de vídeo, mientras que el tiempo de espera es de solo 200 ms. Esto da como resultado un mensaje de error del kernel. Aumente el tiempo de espera a 1 segundo. A continuación se muestra un ejemplo del mensaje de error. [ 697.084433] ------------[ cortar aquí ]------------ [ 697.091115] ast 0000:02:00.0: [drm] drm_WARN_ON(!__ast_dp_wait_enable(ast, enabled)) [ 697.091233] ADVERTENCIA: CPU: 1 PID: 160 en drivers/gpu/drm/ast/ast_dp.c:232 ast_dp_set_enable+0x123/0x140 [ast] [...] [ 697.272469] RIP: 0010:ast_dp_set_enable+0x123/0x140 [ast] [...] [ 697.415283] Seguimiento de llamadas: [ 697.420727]  [ __warn.cold+0xaf/0xca [ 697.464713] ? ast_dp_set_enable+0x123/0x140 [ast] [ 697.472633] ? report_bug+0x134/0x1d0 [ 697.479544] ? handle_bug+0x58/0x90 [ 697.486127] ? exc_invalid_op+0x13/0x40 [ 697.492975] ? asm_exc_invalid_op+0x16/0x20 [ 697.500224] ? preempt_count_sub+0x14/0xc0 [ 697.507473] ? ast_dp_set_enable+0x123/0x140 [ast] [ 697.515377] ? ast_dp_set_enable+0x123/0x140 [ast] [ 697.523227] drm_atomic_helper_commit_modeset_enables+0x30a/0x470 [ 697.532388] drm_atomic_helper_commit_tail+0x58/0x90 [ 697.540400] ast_mode_config_helper_atomic_commit_tail+0x30/0x40 [ast] [ 697.550009] commit_tail+0xfe/0x1d0 [ 697.556547] drm_atomic_helper_commit+0x198/0x1c0 Este es un problema cosmético. La habilitación de la señal de video aún funciona incluso con el mensaje de error. El problema siempre ha estado presente, pero solo las versiones recientes del controlador ast advierten sobre la pérdida del tiempo de espera."
    }
  ],
  "lastModified": "2026-06-17T08:44:10.830",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0E92CEE3-1FC3-4AFC-A513-DEDBA7414F00",
              "versionEndExcluding": "6.13.3",
              "versionStartIncluding": "6.13"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}