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

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

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/12/2024
Created
10/05/2024
Added
10/04/2024
Modified
10/04/2024

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

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