CVE-2025-40074
In the Linux kernel, the following vulnerability has been resolved: ipv4: start using dst_dev_rcu() Change icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF. Change ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(), ipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu().
- Published Oct 28, 2025
- CVSS 9.8 critical
- 0.5% chance of exploitation in the next 30 days (EPSS)
- A fix is available