CVE-2024-27395 Affecting kernel-core package, versions <0:4.18.0-553.16.1.el8_10
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELCORE-6849592
- published 15 May 2024
- disclosed 8 May 2024
Introduced: 8 May 2024
CVE-2024-27395 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-core to version 0:4.18.0-553.16.1.el8_10 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
net: openvswitch: Fix Use-After-Free in ovs_ct_exit
Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free.
To prevent this, it should be changed to hlist_for_each_entry_safe.
References
- https://access.redhat.com/security/cve/CVE-2024-27395
- https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994
- https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3
- https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424
- https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2
- https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4
- https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1
- https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137
- https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html