CVE-2025-21760
7.8
HIGH
CVSS 3.1
EPSS 9.1%
Description
In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF.
How to fix CVE-2025-21760
To remediate CVE-2025-21760, upgrade the affected package to a fixed version below.
- Debian/linux—upgrade to 5.10.237-1 or later
- —upgrade to 6.1.129-1~deb11u1 or later
Is CVE-2025-21760 being exploited?
Moderate — EPSS is 9.1%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (2)
- from 0, < 5.10.237-1
- from 0, < 6.1.129-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |