DEBIAN-CVE-2026-40493

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Source

https://security-tracker.debian.org/tracker/CVE-2026-40493

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40493.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-40493

Upstream

CVE-2026-40493

Published

2026-04-18T03:16:13Z

Modified

2026-09-14T17:03:10Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit c930284445ea3ff94451ccd7a57c999eca3bc979, the PSD codec computes bytes-per-pixel (bpp) from raw header fields channels * depth, but the pixel buffer is allocated based on the resolved pixel format. For LAB mode with channels=3, depth=16, bpp = (3*16+7)/8 = 6, but the format BPP40_CIE_LAB allocates only 5 bytes per pixel. Every pixel write overshoots, causing a deterministic heap buffer overflow on every row. Commit c930284445ea3ff94451ccd7a57c999eca3bc979 contains a patch.

References

https://security-tracker.debian.org/tracker/CVE-2026-40493

Affected packages

Debian:13 / sail

Package

Name: sail
Purl: pkg:deb/debian/sail?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.9.8-1

0.9.8-1+deb13u1

0.9.9-1

0.9.10-1

0.9.10-2

0.9.10-3

1.*

1.2.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40493.json"

Debian:14 / sail