CVE-2015-4178

The fs_pin implementation in the Linux kernel before 4.0.5 does not ensure the internal consistency of a certain list data structure, 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, related to fs/fs_pin.c and include/linux/fs_pin.h.

Score

CVSS 3.0 5.5 Medium

Status

Modified - secalert@redhat.com

Published

2016-05-02

Last modified

2024-08-06

Affected products

• Linux Kernel (Linux)

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=820f9f147dcce2602eefd9b575bbbd9ea14f0953
• 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=1249849
• https://github.com/torvalds/linux/commit/820f9f147dcce2602eefd9b575bbbd9ea14f0953