Description

The VFS subsystem in the Linux kernel 3.x provides an incomplete set of requirements for setattr operations that underspecifies removing extended privilege attributes, which allows local users to cause a denial of service (capability stripping) via a failed invocation of a system call, as demonstrated by using chown to remove a capability from the ping or Wireshark dumpcap program.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1185139

http://www.openwall.com/lists/oss-security/2015/01/24/5

http://marc.info/?l=linux-kernel&m=142153722930533&w=2

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=770492

http://www.securityfocus.com/bid/76075

Details

Risk Information

CVSS v2

CVSS v3