CVE-2026-23367
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
wifi: radiotap: reject radiotap with unknown bits
The radiotap parser is currently only used with the radiotap namespace (not with vendor namespaces), but if the undefined field 18 is used, the alignment/size is unknown as well. In this case, iterator->_next_ns_data isn't initialized (it's only set for skipping vendor namespaces), and syzbot points out that we later compare against this uninitialized value.
Fix this by moving the rejection of unknown radiotap fields down to after the in-namespace lookup, so it will really use iterator->_next_ns_data only for vendor namespaces, even in case undefined fields are present.
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: 0.12%
- Percentil entre todas las CVEs puntuadas: 2
- 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
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/129c8bb320a7cef692c78056ef8e89a2a12ba448
- https://git.kernel.org/stable/c/2a60c588d5d39ad187628f58395c776a97fd4323
- https://git.kernel.org/stable/c/2f8ceeba670610d66f77def32011f48de951d781
- https://git.kernel.org/stable/c/6f80f6a60f5d87e5de5fb2732751fce799991c24
- https://git.kernel.org/stable/c/703fa979badbba83d31cd011606d060bfb8b0d1d
- https://git.kernel.org/stable/c/c854758abe0b8d86f9c43dc060ff56a0ee5b31e0
- https://git.kernel.org/stable/c/d1d1d3c50095928624a95b67a6d7ccc3a18f2215
- https://git.kernel.org/stable/c/e664971759a0e5570b50c6592e58a7f97d55e992
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: radiotap: reject radiotap with unknown bits\n\nThe radiotap parser is currently only used with the radiotap\nnamespace (not with vendor namespaces), but if the undefined\nfield 18 is used, the alignment/size is unknown as well. In\nthis case, iterator->_next_ns_data isn't initialized (it's\nonly set for skipping vendor namespaces), and syzbot points\nout that we later compare against this uninitialized value.\n\nFix this by moving the rejection of unknown radiotap fields\ndown to after the in-namespace lookup, so it will really use\niterator->_next_ns_data only for vendor namespaces, even in\ncase undefined fields are present."
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nwifi: radiotap: rechazar radiotap con bits desconocidos\n\nEl analizador de radiotap actualmente solo se utiliza con el espacio de nombres de radiotap (no con espacios de nombres de proveedor), pero si se utiliza el campo indefinido 18, la alineación/tamaño también es desconocido. En este caso, iterator->_next_ns_data no está inicializado (solo se establece para omitir espacios de nombres de proveedor), y syzbot señala que más tarde comparamos con este valor no inicializado.\n\nEsto se soluciona moviendo el rechazo de campos radiotap desconocidos a después de la búsqueda dentro del espacio de nombres, para que realmente utilice iterator->_next_ns_data solo para espacios de nombres de proveedor, incluso en caso de que haya campos indefinidos."
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