Description
X Fontserver for Truetype fonts (xfstt) 1.4 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a (1) FS_QueryXExtents8 or (2) FS_QueryXBitmaps8 packet, and possibly other types of packets, with a large num_ranges value, which causes an out-of-bounds array access.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | xfstt | 1.5-1 | — |
| Debian 3.0 | xfstt | 1.2.1-3 | DSA-360 |
Advisories 1
- DSA-360 xfstt - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- DSA-360 vendor-advisory
- 20030714 xfstt-1.4 vulnerability mailing-list