Imager versions before 1.036 for Perl disclose uninitialised heap memory reading a paletted image with pixel indexes past its colour map in i_gpix_p and i_glin_p.
The palette is allocated uninitialised, and only the entries a reader adds count as populated. The TGA reader stores pixel indexes without checking them against the colour map. i_gpix_p() rejects only an index greater than the count, so an index equal to it reads the first unpopulated entry, and getpixel() returns it.
i_glin_p() skips any index at or beyond the count without writing that pixel to the caller's buffer. The palette-to-RGB conversion reads each row through an uninitialised buffer, so those pixels of the converted image hold prior heap contents.
Reading an attacker-supplied image through Imager->read() and then fetching its pixels or converting it to RGB discloses process heap memory.
References
Configurations
No configuration.
History
22 Sep 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
18 Sep 2026, 18:18
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
18 Sep 2026, 14:19
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-18 14:19
Updated : 2026-09-22 19:16
NVD link : CVE-2026-93018
Mitre link : CVE-2026-93018
CVE.ORG link : CVE-2026-93018
JSON object : View
Products Affected
No product.