CVE-2026-64414
Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
25/07/2026
Última modificación:
25/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
netfilter: handle unreadable frags<br />
<br />
sashiko reports:<br />
When an skb with unreadable fragments (such as from devmem TCP, where<br />
skb_frags_readable(skb) returns false) is processed by the u32 module,<br />
skb_copy_bits() will safely return a negative error code [..]<br />
<br />
xt_u32: bail out with hotdrop in this case.<br />
gather_frags: return -1, just as if we had no fragment header.<br />
nfnetlink_queue: restrict to the linear part.<br />
nfnetlink_log: restrict to the linear part.<br />
<br />
v2:<br />
- skb_zerocopy helpers don&#39;t copy readable flag, i.e. nfnetlink_queue<br />
is broken too<br />
xt_u32 shouldn&#39;t return true if hotdrop was set.



