CVE-2010-4256

Published: 25 January 2011

The pipe_fcntl function in fs/pipe.c in the Linux kernel before 2.6.37 does not properly determine whether a file is a named pipe, which allows local users to cause a denial of service via an F_SETPIPE_SZ fcntl call.

From the Ubuntu security team

It was discovered that named pipes did not correctly handle certain fcntl calls. A local attacker could exploit this to crash the system, leading to a denial of service.

Status

Notes

http://openwall.com/lists/oss-security/2010/11/30/6 claims
it was introduced in 2.6.35-rc2

it was introduced by commit 35f3d14dbbc58447c61e38a162ea10add6b31dc7
"pipe: add support for shrinking and growing pipes"
which was introduced in v2.6.35-rc1

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4256
• https://ubuntu.com/security/notices/USN-1083-1
• https://ubuntu.com/security/notices/USN-1054-1
• https://ubuntu.com/security/notices/USN-1167-1
• https://ubuntu.com/security/notices/USN-1202-1
• NVD
• Launchpad
• Debian