CVE-2014-7975

Description

The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.

Primary references

• cve@mitre.org — Mailing List, Patch, Vendor Advisory
• cve@mitre.org — Broken Link
• cve@mitre.org — Broken Link
• cve@mitre.org — Broken Link
• cve@mitre.org — Broken Link
• cve@mitre.org — Broken Link
• cve@mitre.org — Mailing List, Third Party Advisory
• cve@mitre.org — Third Party Advisory, VDB Entry
• cve@mitre.org — Third Party Advisory, VDB Entry
• cve@mitre.org — Third Party Advisory
• cve@mitre.org — Third Party Advisory
• cve@mitre.org — Third Party Advisory