CVE-2026-31435
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
22/04/2026
Última modificación:
22/04/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
netfs: Fix read abandonment during retry<br />
<br />
Under certain circumstances, all the remaining subrequests from a read<br />
request will get abandoned during retry. The abandonment process expects<br />
the &#39;subreq&#39; variable to be set to the place to start abandonment from, but<br />
it doesn&#39;t always have a useful value (it will be uninitialised on the<br />
first pass through the loop and it may point to a deleted subrequest on<br />
later passes).<br />
<br />
Fix the first jump to "abandon:" to set subreq to the start of the first<br />
subrequest expected to need retry (which, in this abandonment case, turned<br />
out unexpectedly to no longer have NEED_RETRY set).<br />
<br />
Also clear the subreq pointer after discarding superfluous retryable<br />
subrequests to cause an oops if we do try to access it.



