CVE-2026-5947
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-362
Ejecución concurrente utilizando recursos compartidos con una incorrecta sincronización (Condición de carrera)
Fecha de publicación:
20/05/2026
Última modificación:
20/05/2026
Descripción
*** Pendiente de traducción *** Undefined behavior may result due to a race condition leading to a use-after-free violation. If BIND receives an incoming DNS message signed with SIG(0), it begins work to validate that signature. If, during that validation, the "recursive-clients" limit is reached (as would occur during a query flood), and that same DNS message is discarded per the limit, there is a brief window of time while the SIG(0) validation may attempt to read the now-discarded DNS message.<br />
This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and 9.20.9-S1 through 9.20.22-S1.<br />
BIND 9 versions 9.18.28 through 9.18.49 and 9.18.28-S1 through 9.18.49-S1 are NOT affected.
Impacto
Puntuación base 3.x
7.50
Gravedad 3.x
ALTA