Double Free Affecting kernel-core package, versions <0:5.14.0-70.50.2.el9_0
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-5292180
- published 23 Mar 2023
- disclosed 20 Mar 2023
How to fix?
Upgrade RHEL:9 kernel-core to version 0:5.14.0-70.50.2.el9_0 or higher.
This issue was patched in RHSA-2023:1468.
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 RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.
References
- https://access.redhat.com/security/cve/CVE-2022-4744
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
- http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://security.netapp.com/advisory/ntap-20230526-0009/