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CVE-2017-5551

Published: Feb 6, 2017

Modified: Aug 5, 2024

PUBLISHED

Description

The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31

x_refsource_CONFIRM

[oss-security] 20170120 Re: CVE REQUEST: linux kernel: process with pgid zero able to crash kernel

mailing-list

x_refsource_MLIST

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6

x_refsource_CONFIRM

vdb-entry

x_refsource_BID

https://bugzilla.redhat.com/show_bug.cgi?id=1416126

x_refsource_CONFIRM

https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31

x_refsource_CONFIRM

vendor-advisory

x_refsource_DEBIAN

vdb-entry

x_refsource_SECTRACK

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