fkie_cve-2019-19241
Vulnerability from fkie_nvd
Published
2019-12-17 20:15
Modified
2024-11-21 04:34
Severity ?
Summary
In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * |
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"value": "In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context."
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"value": "En el kernel de Linux versiones anteriores a la versi\u00f3n 5.4.2, la caracter\u00edstica io_uring genera peticiones que inadvertidamente tienen UID 0 y capacidades completas, tambi\u00e9n se conoce como CID-181e448d8709. Esto est\u00e1 relacionado con los archivos fs/io-wq.c, fs/io_uring.c, y net/socket.c. Por ejemplo, un atacante puede eludir las restricciones previstas para agregar una direcci\u00f3n IPv4 a la interfaz de bucle invertido. Esto ocurre porque las operaciones IORING_OP_SENDMSG, aunque se solicitan en el contexto de un usuario sin privilegios, a veces las realiza un subproceso de trabajo del kernel sin tener en cuenta ese contexto."
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"id": "CVE-2019-19241",
"lastModified": "2024-11-21T04:34:23.750",
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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