Buffer Overflow Affecting kernel-debug-core package, versions <0:4.18.0-193.100.1.el8_2
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGCORE-4081456
- published 12 Dec 2022
- disclosed 9 Dec 2022
How to fix?
Upgrade RHEL:8 kernel-debug-core to version 0:4.18.0-193.100.1.el8_2 or higher.
This issue was patched in RHSA-2023:1109.
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 stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.
References
- https://access.redhat.com/security/cve/CVE-2022-4378
- http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html
- https://bugzilla.redhat.com/show_bug.cgi?id=2152548
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch
- https://seclists.org/oss-sec/2022/q4/178