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cpe:2.3:a:libxfont2:libxfont2:*:*:*:*:*:*:*:*part: a version: * update: *
| Vendor | Libxfont2 (46dff68d-cd14-5264-83b4-474402318973) |
|---|---|
| Product | Libxfont2 (946aedcd-ece3-54f3-99a4-1e58d03e8147) |
| Edition | * |
| Language | * |
| Software edition | * |
| Target software | * |
| Target hardware | * |
| Other | * |
Notes
Imported from gcve-enriched-dumps CVE data
PURL mappings
| PURL | Source | Last updated |
|---|---|---|
| No PURL mappings for this CPE yet. | ||
Vulnerability references
| Identifier | cpeApplicability | Submitted | db.gcve.eu details | Rationale |
|---|---|---|---|---|
CVE:CVE-2026-59679 |
vulnerable | 2026-09-16 04:32:47.212229 |
fs_read_glyphs() heap OOB read/write via encoding array index mismatch in libXfont2
CRITICAL (9)
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.
Published: 2026-09-10T08:15:24.892Z
Updated: 2026-09-10T12:45:33.969Z Reference links |
Imported from gcve-enriched-dumps CVE data |
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