Integer Underflow Affecting kernel-tools package, versions <0:4.18.0-477.36.1.el8_8
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Test your applications- Snyk ID SNYK-RHEL8-KERNELTOOLS-6094816
- published 29 Nov 2023
- disclosed 22 Sep 2023
How to fix?
Upgrade RHEL:8 kernel-tools to version 0:4.18.0-477.36.1.el8_8 or higher.
This issue was patched in RHSA-2023:7539.
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.
An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the h->nets array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.
References
- https://access.redhat.com/security/cve/CVE-2023-42753
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- https://www.openwall.com/lists/oss-security/2023/09/22/10
- https://access.redhat.com/errata/RHSA-2023:7539
- https://bugzilla.redhat.com/show_bug.cgi?id=2239843
- https://seclists.org/oss-sec/2023/q3/216