setpwnam.c in the util-linux package, as included in Red Hat Linux 7.3 and earlier, and other operating systems, does not properly lock a temporary file when modifying /etc/passwd, which may allow local users to gain privileges via a complex race condition that uses an open file descriptor in utility programs such as chfn and chsh.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mandrake_single_network_firewall | Mandrakesoft | 7.2 (including) | 7.2 (including) |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | RedHat | * | |
| Red Hat Linux 6.2 | RedHat | * | |
| Red Hat Linux 7.0 | RedHat | * | |
| Red Hat Linux 7.1 | RedHat | * | |
| Red Hat Linux 7.2 | RedHat | * | |
| Red Hat Linux 7.3 | RedHat | * |