CVE-2026-43494
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
21/05/2026
Última modificación:
21/05/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
net/rds: reset op_nents when zerocopy page pin fails<br />
<br />
When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(),<br />
the pinned pages are released with put_page(), and<br />
rm->data.op_mmp_znotifier is cleared. But we fail to properly<br />
clear rm->data.op_nents.<br />
<br />
Later when rds_message_purge() is called from rds_sendmsg() the<br />
cleanup loop iterates over the incorrectly non zero number of<br />
op_nents and frees them again.<br />
<br />
Fix this by properly resetting op_nents when it should be in<br />
rds_message_zcopy_from_user().



