| 标题 | SerenityOS SerenityOS LibGfx >= d76ad23 Integer Overflow |
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| 描述 | SerenityOS is a graphical Unix-like operating system that includes the LibGfx image decoding library.
This code is vulnerable to CWE-190: Integer Overflow or Wraparound due to improper validation of the BMP DIB header height value. The decode_bmp_pixel_data() function processes the signed 32-bit height field from an attacker-controlled BMP file and applies abs() to the value without checking for "INT_MIN"(-2147483648). Because the absolute value of "INT_MIN" cannot be represented by a signed 32-bit integer, calling abs(INT_MIN) results in signed integer overflow and undefined behavior. An attacker can trigger the issue by supplying a specially crafted BMP file whose height field is set to 0x80000000. Under UBSan configurations with halt_on_error enabled, processing such a file causes the image decoder process to abort, resulting in a denial of service. In non-sanitized release builds, the behavior is compiler-dependent due to the underlying undefined behavior.
More details: https://github.com/SerenityOS/serenity/issues/26957 |
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| 来源 | ⚠️ https://github.com/SerenityOS/serenity/issues/26957 |
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| 用户 | cz_seuer (UID 100791) |
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| 提交 | 2026-08-25 09時14分 (26 日前) |
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| 管理 | 2026-09-19 19時40分 (25 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 407958 [SerenityOS 直到 3d83e4509fd20d7438e1ae8470ffe668c136229c LibGfx BMPLoader.cpp decode_bmp_pixel_data height 内存损坏] |
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| 积分 | 20 |
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