Use After Free Affecting kernel-debug-core package, versions <0:4.18.0-305.el8
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGCORE-4039260
- published 26 Jul 2021
- disclosed 31 May 2020
Introduced: 31 May 2020
CVE-2020-14356 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug-core to version 0:4.18.0-305.el8 or higher.
This issue was patched in RHSA-2021:1578.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found in the way when reboot the system. A local user could use this flaw to crash the system or escalate their privileges on the system.
References
- https://security.netapp.com/advisory/ntap-20200904-0002/
- https://access.redhat.com/security/cve/CVE-2020-14356
- https://bugzilla.kernel.org/show_bug.cgi?id=208003
- https://bugzilla.redhat.com/show_bug.cgi?id=1868453
- https://lore.kernel.org/netdev/CAM_iQpUKQJrj8wE+Qa8NGR3P0L+5Uz=qo-O5+k_P60HzTde6aw%40mail.gmail.com/t/
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- https://access.redhat.com/errata/RHSA-2021:1578
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html
- https://usn.ubuntu.com/4483-1/
- https://usn.ubuntu.com/4484-1/
- https://usn.ubuntu.com/4526-1/