CVE-2026-93018
- Source
- https://cve.org/CVERecord?id=CVE-2026-93018
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93018.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-93018
- Aliases
-
- GHSA-j7v7-cm4g-vrgf
- Downstream
- Published
- 2026-09-18T13:57:37Z
- Modified
- 2026-09-19T03:47:26Z
- Summary
- 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
- Details
-
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.
- Database specific
{ "cna_assigner": "CPANSec", "cwe_ids": [ "CWE-193", "CWE-908" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93018.json" }- References
-
- http://www.openwall.com/lists/oss-security/2026/09/18/8
- https://cpan.org/modules
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93018.json
- https://github.com/tonycoz/imager
- https://github.com/tonycoz/imager/commit/dcf0a52e2732399d42ab44d98af6934658d068ee.patch
- https://github.com/tonycoz/imager/security/advisories/GHSA-j7v7-cm4g-vrgf
- https://metacpan.org/release/TONYC/Imager-1.036/changes
- https://nvd.nist.gov/vuln/detail/CVE-2026-93018