Vulnerability Name: | CVE-2015-4177 (CCN-103944) | ||||||||||||||||||||
Assigned: | 2015-05-29 | ||||||||||||||||||||
Published: | 2015-05-29 | ||||||||||||||||||||
Updated: | 2016-05-06 | ||||||||||||||||||||
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. CWE-476: NULL Pointer Dereference | ||||||||||||||||||||
CVSS v3 Severity: | 5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
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CVSS v2 Severity: | 4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C) 3.7 Low (Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
3.5 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
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Vulnerability Type: | CWE-Other | ||||||||||||||||||||
Vulnerability Consequences: | Denial of Service | ||||||||||||||||||||
References: | Source: MITRE Type: CNA CVE-2015-4177 Source: CONFIRM Type: Vendor Advisory http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cd4a40174b71acd021877341684d8bb1dc8ea4ae Source: MLIST Type: UNKNOWN [oss-security] 20150529 Re: CVE request Linux kernel: ns: user namespaces panic Source: MLIST Type: UNKNOWN [oss-security] 20150529 CVE request Linux kernel: ns: user namespaces panic Source: CCN Type: oss-security Mailing List, Fri, 29 May 2015 22:05:26 +0530 (IST) CVE request Linux kernel: ns: user namespaces panic Source: CCN Type: oss-security Mailing List, Thu, 4 Jun 2015 09:57:44 -0400 (EDT) Re: CVE request Linux kernel: ns: user namespaces panic Source: CONFIRM Type: UNKNOWN http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5 Source: MLIST Type: UNKNOWN [oss-security] 20150604 Re: Re: CVE request Linux kernel: ns: user namespaces panic Source: CONFIRM Type: UNKNOWN https://bugzilla.redhat.com/show_bug.cgi?id=1248486 Source: XF Type: UNKNOWN linux-kernel-cve20154177-dos(103944) Source: CCN Type: Linux Kernel GIT Repository fs_pin: Allow for the possibility that m_list or s_list go unused Source: CONFIRM Type: Vendor Advisory https://github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4ae | ||||||||||||||||||||
Vulnerable Configuration: | Configuration 1: Configuration CCN 1: Denotes that component is vulnerable | ||||||||||||||||||||
Oval Definitions | |||||||||||||||||||||
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