CVE-2024-50088

Estado: ModificadaAlta (7.8)—

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

btrfs: fix uninitialized pointer free in add_inode_ref()

The add_inode_ref() function does not initialize the "name" struct when it is declared. If any of the following calls to "read_one_inode() returns NULL,

then "name.name" would be freed on "out" before being initialized.

This issue was reported by Coverity with CID 1526744.

Detalles técnicos trazas, registros y código del informe original

	dir = read_one_inode(root, parent_objectid);
	if (!dir) {
		ret = -ENOENT;
		goto out;
	}

	inode = read_one_inode(root, inode_objectid);
	if (!inode) {
		ret = -EIO;
		goto out;
	}

out:
	...
	kfree(name.name);

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21%
Percentil entre todas las CVEs puntuadas: 11
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 escalation85 %
Impacto principalT1499.004 Application or System Exploitationimpact75 %

Vulnerabilidad local de use-after-free (CWE-824) en kernel Linux que permite escalada de privilegios (PR:L → T1068). El DoS es el impacto más probable por corrupción de memoria.

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 Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-824
CWE-824

Referencias

JSON original (NVD)

Mostrar

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix uninitialized pointer free in add_inode_ref()\n\nThe add_inode_ref() function does not initialize the \"name\" struct when\nit is declared.  If any of the following calls to \"read_one_inode()\nreturns NULL,\n\n\tdir = read_one_inode(root, parent_objectid);\n\tif (!dir) {\n\t\tret = -ENOENT;\n\t\tgoto out;\n\t}\n\n\tinode = read_one_inode(root, inode_objectid);\n\tif (!inode) {\n\t\tret = -EIO;\n\t\tgoto out;\n\t}\n\nthen \"name.name\" would be freed on \"out\" before being initialized.\n\nout:\n\t...\n\tkfree(name.name);\n\nThis issue was reported by Coverity with CID 1526744."
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    }
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