Vulnerabilities > CVE-2015-4177 - Unspecified vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE Summary
The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call. <a href="http://cwe.mitre.org/data/definitions/476.html">CWE-476: NULL Pointer Dereference</a>
Vulnerable Configurations
Nessus
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1487.NASL description According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - It was found that the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 124811 published 2019-05-13 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124811 title EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1487) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1535.NASL description According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - The ims_pcu_get_cdc_union_desc function in drivers/input/misc/ims-pcu.c in the Linux kernel, through 4.13.11, allows local users to cause a denial of service (ims_pcu_parse_cdc_data out-of-bounds read and system crash) or possibly have unspecified other impact via a crafted USB device.(CVE-2017-16645i1/4%0 - It was found that due to excessive files_lock locking, a soft lockup could be triggered in the Linux kernel when performing asynchronous I/O operations. A local, unprivileged user could use this flaw to crash the system.(CVE-2014-8172i1/4%0 - A flaw was discovered in the kernel last seen 2020-03-19 modified 2019-05-14 plugin id 124988 published 2019-05-14 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124988 title EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1535)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cd4a40174b71acd021877341684d8bb1dc8ea4ae
- http://openwall.com/lists/oss-security/2015/05/29/10
- http://openwall.com/lists/oss-security/2015/05/29/5
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5
- http://www.openwall.com/lists/oss-security/2015/06/04/5
- https://bugzilla.redhat.com/show_bug.cgi?id=1248486
- https://github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4ae