Use of Uninitialized Variable Affecting kernel-core package, versions <0:5.14.0-162.6.1.el9_1
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-5673673
- published 30 Mar 2023
- disclosed 22 Sep 2022
Introduced: 22 Sep 2022
CVE-2022-42432 Open this link in a new tabHow to fix?
Upgrade RHEL:9 kernel-core to version 0:5.14.0-162.6.1.el9_1 or higher.
This issue was patched in RHSA-2022:8267.
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.
This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel 6.0-rc2. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the nft_osf_eval function. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel. Was ZDI-CAN-18540.
References
- https://access.redhat.com/security/cve/CVE-2022-42432
- https://patchwork.ozlabs.org/project/netfilter-devel/patch/20220907082618.1193201-1-pablo@netfilter.org/
- https://www.zerodayinitiative.com/advisories/ZDI-22-1457/
- https://patchwork.ozlabs.org/project/netfilter-devel/patch/20220907082618.1193201-1-pablo%40netfilter.org/