Veille CVE
CVE-2026-59679
9.0 CritiqueDescription
fs_read_glyphs() in the libXfont2 font-server client (src/fc/fserve.c) indexes the per-character encoding[] array using num_chars from the FS_QueryXBitmaps16 reply, but that array was allocated with a size derived from num_extents in the separate FS_QueryXExtents16 reply. The two CARD32 fields are never cross-checked. A malicious or compromised font server can send a small num_extents (e.g. 1) in the extents reply, then a large num_chars (e.g. 100000) in the bitmaps reply. This causes attacker-controlled out-of-bounds heap read and writes.
Produits concernés
- SUSE Container suse/kiosk/tigervnc-x11vnc:1.14-63.8
- SUSE Container suse/kiosk/xorg:21.1-83.7
- SUSE Image SLES15-SP6-SAP
- SUSE Image SLES15-SP6-SAP-Azure
- SUSE Image SLES15-SP6-SAP-Azure-3P
- SUSE Image SLES15-SP6-SAP-BYOS
- SUSE Image SLES15-SP6-SAP-BYOS-Azure
- SUSE Image SLES15-SP6-SAP-BYOS-EC2
- SUSE Image SLES15-SP6-SAP-BYOS-GCE
- SUSE Image SLES15-SP6-SAP-EC2
- SUSE Image SLES15-SP6-SAP-GCE
- SUSE Image SLES15-SP6-SAP-Hardened
- SUSE Image SLES15-SP6-SAP-Hardened-Azure
- SUSE Image SLES15-SP6-SAP-Hardened-BYOS
- SUSE Image SLES15-SP6-SAP-Hardened-BYOS-Azure
- SUSE Image SLES15-SP6-SAP-Hardened-BYOS-EC2
- SUSE Image SLES15-SP6-SAP-Hardened-BYOS-GCE
- SUSE Image SLES15-SP6-SAP-Hardened-EC2
- SUSE Image SLES15-SP6-SAP-Hardened-GCE
- SUSE Image SLES15-SP6-SAPCAL
- SUSE Image SLES15-SP6-SAPCAL-Azure
- SUSE Image SLES15-SP6-SAPCAL-EC2
- SUSE Image SLES15-SP6-SAPCAL-GCE
- SUSE Image SLES15-SP7-SAP-Azure
- SUSE Image SLES15-SP7-SAP-Azure-3P
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 4.0 | 9.2 Critique | meissner@suse.de | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| 3.1 | 9.0 Critique | meissner@suse.de | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |