CVE catalog
CVE-2007-4990
xfs
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 10.74% · Oct 25, 2026
The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption. xfs heap overflow in the swap_char2b function Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | xfs | 4.0 | 1.0.1-7 | fixed |
| Debian | xfree86 | 3.1 | 4.3.0.dfsg.1-14 | vulnerable |
| Debian | xfree86 | 3.1 | 4.3.0.dfsg.1-14sarge1 | vulnerable |
| Debian | xfree86 | 3.1 | 4.3.0.dfsg.1-14sarge2 | vulnerable |
| Debian | xfree86 | 3.1 | 4.3.0.dfsg.1-14sarge3 | vulnerable |
| Debian | xfree86 | 3.1 | 4.3.0.dfsg.1-14sarge4 | vulnerable |
| Debian | xfree86 | 3.1 | 4.3.0.dfsg.1-14sarge5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | xfs | deb | 4.0 | 1.0.1-7 | Not reported | DSA-1385-1 | Not reported |
| Debian | xfree86 | deb | 3.1 | 4.3.0.dfsg.1-14sarge5 | Not reported | DSA-1385-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: