High · published February 27, 2025
In the Linux kernel, the following vulnerability has been resolved:
ipv6: mcast: add RCU protection to mld_newpack()
mld_newpack() can be called without RTNL or RCU being held.
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 2.6.26, < 5.15.179 | 5.15.179 |
| linux/linux_kernel | ≥ 5.16, < 6.1.129 | 6.1.129 |
| linux/linux_kernel | ≥ 6.2, < 6.6.79 | 6.6.79 |
| linux/linux_kernel | ≥ 6.7, < 6.12.16 | 6.12.16 |
| linux/linux_kernel | ≥ 6.13, < 6.13.4 | 6.13.4 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |