CVE-2026-71972
U-Boot through 2026.10-rc5 Out-of-Bounds Write in BMP RLE8 Decoder
- State
- Published
- Severity
- 6.0 Medium
- Published
- Sep 29, 2026
- Updated
- Sep 30, 2026
- Reserved
- Aug 8, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | 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 | VulnCheck |
| 3.1 | 5.9 Medium | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H | VulnCheck |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
u-bootu-boot |
|
References
- https://github.com/u-boot/u-boot/commit/5201e83342d64c2f438ea35158575f28225e752epatch
- https://github.com/u-boot/u-boot/blob/v2026.10-rc5/drivers/video/video_bmp.c#L126technical-description
- https://github.com/u-boot/u-bootproduct
- VulnCheck Advisory: U-Boot through 2026.10-rc5 Out-of-Bounds Write in BMP RLE8 Decoderthird-party-advisory
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