Execution with Unnecessary Privileges Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-240.22.1.rt7.77.el8_3
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUGKVM-2091667
- published 26 Jul 2021
- disclosed 5 Mar 2021
How to fix?
Upgrade Centos:8 kernel-rt-debug-kvm to version 0:4.18.0-240.22.1.rt7.77.el8_3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.
References
- https://security.netapp.com/advisory/ntap-20210409-0001/
- https://access.redhat.com/security/cve/CVE-2021-27365
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
- https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
- https://bugzilla.suse.com/show_bug.cgi?id=1182715
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5
- https://www.openwall.com/lists/oss-security/2021/03/06/1
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
- https://access.redhat.com/errata/RHSA-2021:1081