VDB
DEBIAN-CVE-2025-21758
DEBIAN-CVE-2025-21758
PUBLISHED
CVSS 5.5 MEDIUM
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.
Risk Scores
CVSS v3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | linux-6.1 | 0, 6.1.128-1, 6.1.119-1 |
| Debian:13 | linux | 0, 0 |
| Debian:11 | linux | 6.19.14-1, 6.4.4-3, 6.4.4-3 |
| Debian:12 | linux | 6.1.99-1, 6.1.55-1~bpo11+1, 6.1.64-1 |
| Debian:14 | linux | 0, 0 |
Timeline
- Feb 27, 2025 CVE Published
- Apr 28, 2026 CVE Updated