VULNERABILITY

Amazon Linux AMI: CVE-2025-21760: Security patch for kernel (ALAS-2025-1970)

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Amazon Linux AMI: CVE-2025-21760: Security patch for kernel (ALAS-2025-1970)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
02/27/2025
Created
04/23/2025
Added
04/18/2025
Modified
05/21/2025

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.

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2025-1970
  • CVE-2025-21760

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