Improper Preservation of Permissions Affecting kernel-core package, versions <0:4.18.0-348.20.1.el8_5
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-CENTOS8-KERNELCORE-2419223
- published 8 Mar 2022
- disclosed 7 Mar 2022
How to fix?
Upgrade Centos:8 kernel-core to version 0:4.18.0-348.20.1.el8_5 or higher.
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 Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
References
- https://access.redhat.com/security/cve/CVE-2022-0847
- https://access.redhat.com/errata/RHSA-2022:0825
- http://packetstormsecurity.com/files/166229/Dirty-Pipe-Linux-Privilege-Escalation.html
- http://packetstormsecurity.com/files/166230/Dirty-Pipe-SUID-Binary-Hijack-Privilege-Escalation.html
- http://packetstormsecurity.com/files/166258/Dirty-Pipe-Local-Privilege-Escalation.html
- https://bugzilla.redhat.com/show_bug.cgi?id=2060795
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://dirtypipe.cm4all.com/
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015
- https://security.netapp.com/advisory/ntap-20220325-0005/
- https://www.suse.com/support/kb/doc/?id=000020603
- http://packetstormsecurity.com/files/176534/Linux-4.20-KTLS-Read-Only-Write.html
- https://www.exploit-db.com/exploits/50808
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog