Incorrect Permission Assignment for Critical Resource Affecting kernel-tools package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELTOOLS-1339655
- published 26 Jul 2021
- disclosed 17 Jun 2020
Introduced: 17 Jun 2020
CVE-2020-10781 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-tools.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
A flaw was found in the Linux Kernel before 5.8-rc6 in the ZRAM kernel module, where a user with a local account and the ability to read the /sys/class/zram-control/hot_add file can create ZRAM device nodes in the /dev/ directory. This read allocates kernel memory and is not accounted for a user that triggers the creation of that ZRAM device. With this vulnerability, continually reading the device may consume a large amount of system memory and cause the Out-of-Memory (OOM) killer to activate and terminate random userspace processes, possibly making the system inoperable.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10781
- https://access.redhat.com/security/cve/CVE-2020-10781
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=853eab68afc80f59f36bbdeb715e5c88c501e680
- https://www.openwall.com/lists/oss-security/2020/06/18/1
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html