Vulnerability Database

296,843

Total vulnerabilities in the database

CVE-2025-21759

In the Linux kernel, the following vulnerability has been resolved:

ipv6: mcast: extend RCU protection in igmp6_send()

igmp6_send() can be called without RTNL or RCU being held.

Extend RCU protection so that we can safely fetch the net pointer and avoid a potential UAF.

Note that we no longer can use sock_alloc_send_skb() because ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep.

Instead use alloc_skb() and charge the net->ipv6.igmp_sk socket under RCU protection.

No technical information available.

No CWE or OWASP classifications available.

Software From Fixed in
linux / linux_kernel 6.14-rc1 6.14-rc1.x
linux / linux_kernel 6.13 6.13.4
linux / linux_kernel 6.14-rc2 6.14-rc2.x
linux / linux_kernel 6.7 6.12.16
linux / linux_kernel 2.6.26 6.6.79