Out-of-Bounds Affecting kernel-tools-debuginfo package, versions <0:4.18.0-372.9.1.el8
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Test your applications- Snyk ID SNYK-ROCKY8-KERNELTOOLSDEBUGINFO-3193643
- published 5 Jan 2023
- disclosed 25 Mar 2022
Introduced: 25 Mar 2022
CVE-2021-4157 Open this link in a new tabHow to fix?
Upgrade Rocky-Linux:8 kernel-tools-debuginfo to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in RLSA-2022:1988.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools-debuginfo package and not the kernel-tools-debuginfo package as distributed by Rocky-Linux.
See How to fix? for Rocky-Linux:8 relevant fixed versions and status.
An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4157
- https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-4157.json
- https://bugzilla.redhat.com/show_bug.cgi?id=2034342
- https://lore.kernel.org/lkml/20210517140244.822185482@linuxfoundation.org/
- https://security.netapp.com/advisory/ntap-20220602-0007/
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://lore.kernel.org/lkml/20210517140244.822185482%40linuxfoundation.org/