Use After Free Affecting kernel-syms package, versions <6.4.0-150600.23.17.1
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Test your applications- Snyk ID SNYK-SLES156-KERNELSYMS-7649687
- published 8 Aug 2024
- disclosed 7 Aug 2024
Introduced: 7 Aug 2024
CVE-2024-39494 Open this link in a new tabHow to fix?
Upgrade SLES:15.6 kernel-syms to version 6.4.0-150600.23.17.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-syms package and not the kernel-syms package as distributed by SLES.
See How to fix? for SLES:15.6 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
- https://www.suse.com/security/cve/CVE-2024-39494.html
- https://bugzilla.suse.com/1227716
- https://bugzilla.suse.com/1227901
- 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