The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not properly handle character bitmaps it cannot read, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a crafted BDF font file.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Canonical | 10.04 (including) | 10.04 (including) |
| Ubuntu_linux | Canonical | 12.04 (including) | 12.04 (including) |
| Ubuntu_linux | Canonical | 14.04 (including) | 14.04 (including) |
| Ubuntu_linux | Canonical | 14.10 (including) | 14.10 (including) |
| Debian_linux | Debian | 7.0 (including) | 7.0 (including) |
| Red Hat Enterprise Linux 6 | RedHat | libXfont-0:1.4.5-5.el6_7 | * |
| Red Hat Enterprise Linux 7 | RedHat | libXfont-0:1.4.7-3.el7_1 | * |
| Libxfont | Ubuntu | devel | * |
| Libxfont | Ubuntu | lucid | * |
| Libxfont | Ubuntu | precise | * |
| Libxfont | Ubuntu | trusty | * |
| Libxfont | Ubuntu | upstream | * |
| Libxfont | Ubuntu | utopic | * |