ByteOS Network

NVD Vulnerability Details :

CVE-2026-40493

Received

Source-security-advisories@github.com

Published At-18 Apr, 2026 | 03:16

Updated At-18 Apr, 2026 | 03:16

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Type: Secondary

Version: 3.1

Base score: 9.8

Base severity: CRITICAL

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE ID	Type	Source
CWE-787	Primary	security-advisories@github.com

CWE ID: CWE-787

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/HappySeaFox/sail/commit/c930284445ea3ff94451ccd7a57c999eca3bc979	security-advisories@github.com	N/A
https://github.com/HappySeaFox/sail/security/advisories/GHSA-rcqx-gc76-r9mv	security-advisories@github.com	N/A

Hyperlink: https://github.com/HappySeaFox/sail/commit/c930284445ea3ff94451ccd7a57c999eca3bc979

Source: security-advisories@github.com

Resource: N/A

Hyperlink: https://github.com/HappySeaFox/sail/security/advisories/GHSA-rcqx-gc76-r9mv

Source: security-advisories@github.com

Resource: N/A

CISA Catalog

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