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.
2008-08-12T23:41:00.000
2025-04-09T00:30:58.490
Deferred
CVSSv3.1: 5.5 (MEDIUM)
AV:L/AC:L/Au:N/C:N/I:N/A:C
3.9
6.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Operating System | linux | linux_kernel | < 2.6.25.15 | Yes |
Operating System | debian | debian_linux | 4.0 | Yes |
Operating System | canonical | ubuntu_linux | 6.06 | Yes |
Operating System | canonical | ubuntu_linux | 7.04 | Yes |
Operating System | canonical | ubuntu_linux | 7.10 | Yes |
Operating System | canonical | ubuntu_linux | 8.04 | Yes |
Operating System | suse | suse_linux_enterprise_desktop | 10 | Yes |
Operating System | suse | suse_linux_enterprise_server | 10 | Yes |