Amazon Linux AMI: CVE-2024-39494: Security patch for kernel (ALAS-2024-1947)

Amazon Linux AMI: CVE-2024-39494: Security patch for kernel (ALAS-2024-1947)

Severity

7

CVSS

(AV:L/AC:L/Au:S/C:C/I:C/A:C)

Published

07/12/2024

Created

10/05/2024

Added

10/04/2024

Modified

01/28/2025

Description

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

ima: Fix use-after-free on a dentry's dname.name

->d_name.name can change on rename and the earlier value can be freed;

there are conditions sufficient to stabilize it (->d_lock on dentry,

->d_lock on its parent, ->i_rwsem exclusive on the parent's inode,

rename_lock), but none of those are met at any of the sites. Take a stable

snapshot of the name instead.

Solution(s)

• amazon-linux-upgrade-kernel

References

• ALAS-2024-1947
• CVE-2024-39494