CVE-2024-50152
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix possible double free in smb2_set_ea()
There is a double free in such case: 'ea is initialized to NULL' -> 'first successful memory allocation for ea' -> 'something failed, goto sea_exit' -> 'first memory release for ea' -> 'goto replay_again' -> 'second goto sea_exit before allocate memory for ea' -> 'second memory release for ea resulted in double free'.
Re-initialie 'ea' to NULL near to the replay_again label, it can fix this double free problem.
Detalles técnicos trazas, registros y código del informe original
Clang static checker(scan-build) warning：
fs/smb/client/smb2ops.c:1304:2: Attempt to free released memory.
1304 | kfree(ea);
| ^~~~~~~~~CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.48%
- Percentil entre todas las CVEs puntuadas: 39
- 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).
Tecnologías afectadas (1)
CWE
- CWE-415
Referencias
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix possible double free in smb2_set_ea()\n\nClang static checker(scan-build) warning：\nfs/smb/client/smb2ops.c:1304:2: Attempt to free released memory.\n 1304 | kfree(ea);\n | ^~~~~~~~~\n\nThere is a double free in such case:\n'ea is initialized to NULL' -> 'first successful memory allocation for\nea' -> 'something failed, goto sea_exit' -> 'first memory release for ea'\n-> 'goto replay_again' -> 'second goto sea_exit before allocate memory\nfor ea' -> 'second memory release for ea resulted in double free'.\n\nRe-initialie 'ea' to NULL near to the replay_again label, it can fix this\ndouble free problem."
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