Use After Free Affecting kernel package, versions <0:4.14.72-73.55.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNEL-1665743
- published 27 Sep 2021
- disclosed 19 Sep 2018
Introduced: 19 Sep 2018
CVE-2018-17182 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.72-73.55.amzn2 or higher.
This issue was patched in ALAS2-2018-1086.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.
References
- http://www.securityfocus.com/bid/105417
- http://www.securityfocus.com/bid/106503
- https://security.netapp.com/advisory/ntap-20190204-0001/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17182
- https://www.debian.org/security/2018/dsa-4308
- https://www.exploit-db.com/exploits/45497/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2
- https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2
- https://www.openwall.com/lists/oss-security/2018/09/18/4
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
- https://access.redhat.com/errata/RHSA-2018:3656
- http://www.securitytracker.com/id/1041748
- https://usn.ubuntu.com/3776-1/
- https://usn.ubuntu.com/3776-2/
- https://usn.ubuntu.com/3777-1/
- https://usn.ubuntu.com/3777-2/
- https://usn.ubuntu.com/3777-3/