Medium severity5.5NVD Advisory· Published May 2, 2016· Updated Jun 17, 2026
CVE-2015-4177
CVE-2015-4177
Description
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.
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Affected products
2- Range: <4.0.5
Patches
Vulnerability mechanics
References
7- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdVendor Advisory
- github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4aenvdVendor Advisory
- openwall.com/lists/oss-security/2015/05/29/10nvd
- openwall.com/lists/oss-security/2015/05/29/5nvd
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5nvd
- www.openwall.com/lists/oss-security/2015/06/04/5nvd
- bugzilla.redhat.com/show_bug.cginvd
News mentions
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