Improper Input Validation Affecting kernel-rt package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELRT-1360626
- published 26 Jul 2021
- disclosed 19 Jun 2017
Introduced: 19 Jun 2017
CVE-2017-1000371 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-rt.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.
References
- http://www.securityfocus.com/bid/99131
- https://access.redhat.com/security/cve/CVE-2017-1000371
- http://www.debian.org/security/2017/dsa-3981
- https://www.exploit-db.com/exploits/42273/
- https://www.exploit-db.com/exploits/42276/
- https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
- https://access.redhat.com/errata/RHSA-2020:1524
- https://www.exploit-db.com/exploits/42276