CVE-2023-53820
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
loop: loop_set_status_from_info() check before assignment
In loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should be checked before reassignment, because if an overflow error occurs, the original correct value will be changed to the wrong value, and it will not be changed back.
More, the original patch did not solve the problem, the value was set and ioctl returned an error, but the subsequent io used the value in the loop driver, which still caused an alarm:
Detalles técnicos trazas, registros y código del informe original
loop_handle_cmd do_req_filebacked loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; lo_rw_aio cmd->iocb.ki_pos = pos
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 18
- 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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/258809bf22bf71d53247856f374f2b1d055f2fd4
- https://git.kernel.org/stable/c/2ea7077748e5d7cc64f1c31342c802fe66ea7426
- https://git.kernel.org/stable/c/3e7d0968203d668af6036b9f9199c7b62c8a3581
- https://git.kernel.org/stable/c/4be26d553a3f1d4f54f25353d1496c562002126d
- https://git.kernel.org/stable/c/6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb
- https://git.kernel.org/stable/c/832580af82ace363205039a8e7c4ef04552ccc1a
- https://git.kernel.org/stable/c/861021710bba9dfa0749a3c209a6c1773208b1f1
- https://git.kernel.org/stable/c/9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa
- https://git.kernel.org/stable/c/c79a924ed6afac1708dfd370ba66bcf6a852ced6
JSON original (NVD)
Mostrar
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"id": "CVE-2023-53820",
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{
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"published": "2025-12-09T16:17:20.760",
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nloop: loop_set_status_from_info() check before assignment\n\nIn loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should\nbe checked before reassignment, because if an overflow error occurs, the\noriginal correct value will be changed to the wrong value, and it will not\nbe changed back.\n\nMore, the original patch did not solve the problem, the value was set and\nioctl returned an error, but the subsequent io used the value in the loop\ndriver, which still caused an alarm:\n\nloop_handle_cmd\n do_req_filebacked\n loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;\n lo_rw_aio\n cmd->iocb.ki_pos = pos"
}
],
"lastModified": "2026-06-17T06:46:07.730",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}