CVE-2008-3275

Published: 12 August 2008

The (1) real_lookup and (2) __lookup_hash functions in fs/namei.c in the vfs implementation in the Linux kernel before 2.6.25.15 do not prevent creation of a child dentry for a deleted (aka S_DEAD) directory, which allows local users to cause a denial of service ("overflow" of the UBIFS orphan area) via a series of attempted file creations within deleted directories.

From the Ubuntu security team

Zoltan Sogor discovered that new directory entries could be added to already deleted directories. A local attacker could exploit this, filling up available memory and disk space, leading to a denial of service.

Priority

Medium

CVSS 3 base score: 5.5

Status

References

• https://ubuntu.com/security/notices/USN-637-1
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3275
• NVD
• Launchpad
• Debian