CVE-2023-54325

Estado: AplazadaAlta (7.1)—

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

crypto: qat - fix out-of-bounds read

When preparing an AER-CTR request, the driver copies the key provided by the user into a data structure that is accessible by the firmware. If the target device is QAT GEN4, the key size is rounded up by 16 since a rounded up size is expected by the device. If the key size is rounded up before the copy, the size used for copying the key might be bigger than the size of the region containing the key, causing an out-of-bounds read.

Fix by doing the copy first and then update the keylen.

This is to fix the following warning reported by KASAN:

Detalles técnicos trazas, registros y código del informe original

	[  138.150574] BUG: KASAN: global-out-of-bounds in qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]
	[  138.150641] Read of size 32 at addr ffffffff88c402c0 by task cryptomgr_test/2340

	[  138.150651] CPU: 15 PID: 2340 Comm: cryptomgr_test Not tainted 6.2.0-rc1+ #45
	[  138.150659] Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.86B.0087.D13.2208261706 08/26/2022
	[  138.150663] Call Trace:
	[  138.150668]  <TASK>
	[  138.150922]  kasan_check_range+0x13a/0x1c0
	[  138.150931]  memcpy+0x1f/0x60
	[  138.150940]  qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]
	[  138.151006]  qat_alg_skcipher_init_sessions+0xc1/0x240 [intel_qat]
	[  138.151073]  crypto_skcipher_setkey+0x82/0x160
	[  138.151085]  ? prepare_keybuf+0xa2/0xd0
	[  138.151095]  test_skcipher_vec_cfg+0x2b8/0x800

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 7.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.14%
Percentil entre todas las CVEs puntuadas: 3
Fecha de la puntuación: 6/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto principalT1005 Data from Local Systemcollection70 %

Acceso local sin interacción (AV:L/PR:L/UI:N) permite escalada; lectura fuera de límites expone datos en memoria del kernel.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence Program Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software Data Loss Prevention

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2023-54325",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "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": "67916c9516893528ecce060ada1f58af0ce33d93",
              "lessThan": "7697139d5dfd491f4c495a914a1dd68f6e827a0f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "67916c9516893528ecce060ada1f58af0ce33d93",
              "lessThan": "dc3809f390357c8992f0a23083da934a20fef9af",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "67916c9516893528ecce060ada1f58af0ce33d93",
              "lessThan": "2b1501f058245573a3aa6bf234d205dde1196184",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "67916c9516893528ecce060ada1f58af0ce33d93",
              "lessThan": "f6044cc3030e139f60c281386f28bda6e3049d66",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/crypto/qat/qat_common/qat_algs.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/crypto/qat/qat_common/qat_algs.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:16:21.840",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2b1501f058245573a3aa6bf234d205dde1196184",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7697139d5dfd491f4c495a914a1dd68f6e827a0f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dc3809f390357c8992f0a23083da934a20fef9af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f6044cc3030e139f60c281386f28bda6e3049d66",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - fix out-of-bounds read\n\nWhen preparing an AER-CTR request, the driver copies the key provided by\nthe user into a data structure that is accessible by the firmware.\nIf the target device is QAT GEN4, the key size is rounded up by 16 since\na rounded up size is expected by the device.\nIf the key size is rounded up before the copy, the size used for copying\nthe key might be bigger than the size of the region containing the key,\ncausing an out-of-bounds read.\n\nFix by doing the copy first and then update the keylen.\n\nThis is to fix the following warning reported by KASAN:\n\n\t[  138.150574] BUG: KASAN: global-out-of-bounds in qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]\n\t[  138.150641] Read of size 32 at addr ffffffff88c402c0 by task cryptomgr_test/2340\n\n\t[  138.150651] CPU: 15 PID: 2340 Comm: cryptomgr_test Not tainted 6.2.0-rc1+ #45\n\t[  138.150659] Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.86B.0087.D13.2208261706 08/26/2022\n\t[  138.150663] Call Trace:\n\t[  138.150668]  <TASK>\n\t[  138.150922]  kasan_check_range+0x13a/0x1c0\n\t[  138.150931]  memcpy+0x1f/0x60\n\t[  138.150940]  qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]\n\t[  138.151006]  qat_alg_skcipher_init_sessions+0xc1/0x240 [intel_qat]\n\t[  138.151073]  crypto_skcipher_setkey+0x82/0x160\n\t[  138.151085]  ? prepare_keybuf+0xa2/0xd0\n\t[  138.151095]  test_skcipher_vec_cfg+0x2b8/0x800"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncrypto: qat - corrección de lectura fuera de límites\n\nAl preparar una solicitud AER-CTR, el controlador copia la clave proporcionada por el usuario en una estructura de datos que es accesible por el firmware.\nSi el dispositivo de destino es QAT GEN4, el tamaño de la clave se redondea hacia arriba en 16 ya que el dispositivo espera un tamaño redondeado.\nSi el tamaño de la clave se redondea hacia arriba antes de la copia, el tamaño utilizado para copiar la clave podría ser mayor que el tamaño de la región que contiene la clave, causando una lectura fuera de límites.\n\nCorrección realizando primero la copia y luego actualizando el keylen.\n\nEsto es para corregir la siguiente advertencia reportada por KASAN:\n\n\t[  138.150574] BUG: KASAN: global-out-of-bounds en qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]\n\t[  138.150641] Lectura de tamaño 32 en la dirección ffffffff88c402c0 por la tarea cryptomgr_test/2340\n\n\t[  138.150651] CPU: 15 PID: 2340 Comm: cryptomgr_test No contaminado 6.2.0-rc1+ #45\n\t[  138.150659] Nombre del hardware: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.86B.0087.D13.2208261706 08/26/2022\n\t[  138.150663] Traza de llamada:\n\t[  138.150668] \n\t[  138.150922] kasan_check_range+0x13a/0x1c0\n\t[  138.150931] memcpy+0x1f/0x60\n\t[  138.150940] qat_alg_skcipher_init_com.isra.0+0x197/0x250 [intel_qat]\n\t[  138.151006] qat_alg_skcipher_init_sessions+0xc1/0x240 [intel_qat]\n\t[  138.151073] crypto_skcipher_setkey+0x82/0x160\n\t[  138.151085] ? prepare_keybuf+0xa2/0xd0\n\t[  138.151095] test_skcipher_vec_cfg+0x2b8/0x800"
    }
  ],
  "lastModified": "2026-08-04T11:16:40.367",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}