Race Condition Affecting kernel-bootwrapper package, versions <0:3.10.0-693.1.1.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNELBOOTWRAPPER-4719953
- published 26 Jul 2021
- disclosed 3 Aug 2017
How to fix?
Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-693.1.1.el7 or higher.
This issue was patched in RHSA-2017:2473.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
Race condition in the fsnotify implementation in the Linux kernel through 4.12.4 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that leverages simultaneous execution of the inotify_handle_event and vfs_rename functions.
References
- http://www.securityfocus.com/bid/100123
- https://source.android.com/security/bulletin/2017-12-01
- https://access.redhat.com/security/cve/CVE-2017-7533
- http://www.debian.org/security/2017/dsa-3927
- http://www.debian.org/security/2017/dsa-3945
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
- http://openwall.com/lists/oss-security/2017/08/03/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1468283
- https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e
- https://patchwork.kernel.org/patch/9755753/
- https://patchwork.kernel.org/patch/9755757/
- https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1408967.html
- http://www.openwall.com/lists/oss-security/2019/06/27/7
- http://www.openwall.com/lists/oss-security/2019/06/28/1
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- https://access.redhat.com/errata/RHSA-2017:2473
- http://www.securitytracker.com/id/1039075
- https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1408967.html
- https://www.exploit-db.com/exploits/44302