UBUNTU-CVE-2026-58496

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Source
https://ubuntu.com/security/CVE-2026-58496
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58496.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-58496
Upstream
Published
2026-10-27T23:17:00Z
Modified
2026-10-28T20:17:47Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Thor Vector Graphics (ThorVG) is a production-ready vector graphics engine. Prior to 1.0.7, the SFNT/TTF font loader's SfntLoader::gen function in tvgSfntLoader.cpp reads data[0] through data[3] to identify the font type without first checking that the input buffer contains at least four bytes. Loading an undersized font directly from memory through public APIs such as tvg::Text::load causes an out-of-bounds read. Loading through a file path using mmap can mask the read because of page alignment; the memory-loading API directly exposes it. Depending on memory layout, a malformed short font may crash the consuming application or disclose adjacent heap memory. This issue is fixed in version 1.0.7.

References

Affected packages

Ubuntu:26.10 / thorvg

Package

Name
thorvg
Purl
pkg:deb/ubuntu/thorvg?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.3+dfsg2-4
1.0.6+dfsg-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libthorvg1",
            "binary_version":  "1.0.6+dfsg-1"
        },
        {
            "binary_name":  "thorvg-tools",
            "binary_version":  "1.0.6+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-58496.json"