Execution with Unnecessary Privileges Affecting perf package, versions <0:4.18.0-240.22.1.el8_3
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Test your applications- Snyk ID SNYK-RHEL8-PERF-1469432
- published 26 Jul 2021
- disclosed 5 Mar 2021
How to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-240.22.1.el8_3 or higher.
This issue was patched in RHSA-2021:1093.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL: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-2021:1093