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CVE-2023-54074

Estado: AplazadaAlta (7.8)—

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

net/mlx5e: Use correct encap attribute during invalidation

With introduction of post action infrastructure most of the users of encap attribute had been modified in order to obtain the correct attribute by calling mlx5e_tc_get_encap_attr() helper instead of assuming encap action is always on default attribute. However, the cited commit didn't modify mlx5e_invalidate_encap() which prevents it from destroying correct modify header action which leads to a warning [0]. Fix the issue by using correct attribute.

[0]:

Detalles técnicos trazas, registros y código del informe original
Feb 21 09:47:35 c-237-177-40-045 kernel: WARNING: CPU: 17 PID: 654 at drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:684 mlx5e_tc_attach_mod_hdr+0x1cc/0x230 [mlx5_core]
Feb 21 09:47:35 c-237-177-40-045 kernel: RIP: 0010:mlx5e_tc_attach_mod_hdr+0x1cc/0x230 [mlx5_core]
Feb 21 09:47:35 c-237-177-40-045 kernel: Call Trace:
Feb 21 09:47:35 c-237-177-40-045 kernel:  <TASK>
Feb 21 09:47:35 c-237-177-40-045 kernel:  mlx5e_tc_fib_event_work+0x8e3/0x1f60 [mlx5_core]
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? mlx5e_take_all_encap_flows+0xe0/0xe0 [mlx5_core]
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? lock_downgrade+0x6d0/0x6d0
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? lockdep_hardirqs_on_prepare+0x273/0x3f0
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? lockdep_hardirqs_on_prepare+0x273/0x3f0
Feb 21 09:47:35 c-237-177-40-045 kernel:  process_one_work+0x7c2/0x1310
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? lockdep_hardirqs_on_prepare+0x3f0/0x3f0
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? pwq_dec_nr_in_flight+0x230/0x230
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? rwlock_bug.part.0+0x90/0x90
Feb 21 09:47:35 c-237-177-40-045 kernel:  worker_thread+0x59d/0xec0
Feb 21 09:47:35 c-237-177-40-045 kernel:  ? __kthread_parkme+0xd9/0x1d0

CVSS

Probabilidad de explotación (EPSS)

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.

Vulnerabilidad local (AV:L/PR:L) sin interacción del usuario en kernel Linux que afecta a gestión de encapsulación de red. Causa corrupción de atributos y DoS del sistema por kernel warning.

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 ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

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

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-54074",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": "8300f225268be9ee2c0daf5a3f23929fcdcbf213",
              "lessThan": "00959a1bad58e4b6c14a2729f84d354255073609",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8300f225268be9ee2c0daf5a3f23929fcdcbf213",
              "lessThan": "b8b4292fdd8818ab43b943b6717811651f51e39f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8300f225268be9ee2c0daf5a3f23929fcdcbf213",
              "lessThan": "be071cdb167fc3e25fe81922166b3d499d23e8ac",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.31",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.3.5",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:09.253",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/00959a1bad58e4b6c14a2729f84d354255073609",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b8b4292fdd8818ab43b943b6717811651f51e39f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/be071cdb167fc3e25fe81922166b3d499d23e8ac",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Use correct encap attribute during invalidation\n\nWith introduction of post action infrastructure most of the users of encap\nattribute had been modified in order to obtain the correct attribute by\ncalling mlx5e_tc_get_encap_attr() helper instead of assuming encap action\nis always on default attribute. However, the cited commit didn't modify\nmlx5e_invalidate_encap() which prevents it from destroying correct modify\nheader action which leads to a warning [0]. Fix the issue by using correct\nattribute.\n\n[0]:\n\nFeb 21 09:47:35 c-237-177-40-045 kernel: WARNING: CPU: 17 PID: 654 at drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:684 mlx5e_tc_attach_mod_hdr+0x1cc/0x230 [mlx5_core]\nFeb 21 09:47:35 c-237-177-40-045 kernel: RIP: 0010:mlx5e_tc_attach_mod_hdr+0x1cc/0x230 [mlx5_core]\nFeb 21 09:47:35 c-237-177-40-045 kernel: Call Trace:\nFeb 21 09:47:35 c-237-177-40-045 kernel:  <TASK>\nFeb 21 09:47:35 c-237-177-40-045 kernel:  mlx5e_tc_fib_event_work+0x8e3/0x1f60 [mlx5_core]\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? mlx5e_take_all_encap_flows+0xe0/0xe0 [mlx5_core]\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? lock_downgrade+0x6d0/0x6d0\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? lockdep_hardirqs_on_prepare+0x273/0x3f0\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? lockdep_hardirqs_on_prepare+0x273/0x3f0\nFeb 21 09:47:35 c-237-177-40-045 kernel:  process_one_work+0x7c2/0x1310\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? lockdep_hardirqs_on_prepare+0x3f0/0x3f0\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? pwq_dec_nr_in_flight+0x230/0x230\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? rwlock_bug.part.0+0x90/0x90\nFeb 21 09:47:35 c-237-177-40-045 kernel:  worker_thread+0x59d/0xec0\nFeb 21 09:47:35 c-237-177-40-045 kernel:  ? __kthread_parkme+0xd9/0x1d0"
    }
  ],
  "lastModified": "2026-08-04T10:19:27.630",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}