U-Boot through 2026.10-rc5 Out-of-Bounds Write in BMP RLE8 Decoder

Advisories

U-Boot through 2026.10-rc5 Out-of-Bounds Write in BMP RLE8 Decoder

severity: medium
date: 9/29/2026
Affecting: u-boot <= 2026.10-rc5
CVE: CVE-2026-71972
CWE: CWE-787 Out-of-bounds Write
CVSS: 6.0
CVSS V4 Vector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
References: https://github.com/u-boot/u-boot/commit/5201e83342d64c2f438ea35158575f28225e752e
https://github.com/u-boot/u-boot/blob/v2026.10-rc5/drivers/video/video_bmp.c#L126
https://github.com/u-boot/u-boot
Credit: Shahriyar Jalayeri (ByteRay Ltd.), Mehrun P. Hunter (ByteRay Ltd.)
Description: U-Boot through 2026.10-rc5 contains an out-of-bounds write vulnerability in the video_display_rle8_bitmap function in drivers/video/video_bmp.c. Attackers can supply a crafted RLE8-compressed BMP image to corrupt memory adjacent to the framebuffer and crash the bootloader.

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