Use After Free Affecting kernel-debuginfo package, versions <0:4.14.352-268.568.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-8161110
- published 3 Oct 2024
- disclosed 12 Jul 2024
Introduced: 12 Jul 2024
CVE-2024-39494 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.352-268.568.amzn2 or higher.
This issue was patched in ALAS2-2024-2642.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
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.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39494
- https://git.kernel.org/stable/c/7fb374981e31c193b1152ed8d3b0a95b671330d4
- https://git.kernel.org/stable/c/a78a6f0da57d058e2009e9958fdcef66f165208c
- https://git.kernel.org/stable/c/be84f32bb2c981ca670922e047cdde1488b233de
- https://git.kernel.org/stable/c/dd431c3ac1fc34a9268580dd59ad3e3c76b32a8c