NetSight
IP …
medium5.5

CVE-2026-52985

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy sk_buff Syzbot reports a KMSAN uninit-valu…

Impact

In the Linux kernel, the following vulnerability has been resolved: netdevsim: zero initialize struct iphdr in dummy sk_buff Syzbot reports a KMSAN uninit-value originating from nsim_dev_trap_skb_build, with the allocation also being performed in the same function. Fix this by calling skb_put_zero instead of skb_put to guarantee zero initialization of the whole IP header.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.4 before 5.10.258
from 5.11 before 5.15.209
from 5.16 before 6.1.175
from 6.2 before 6.6.141
from 6.7 before 6.12.91
from 6.13 before 6.18.33

Weakness classification

CWE-908

References