Medium severity5.5NVD Advisory· Published Oct 15, 2026· Updated Oct 15, 2026
CVE-2026-111138
CVE-2026-111138
Description
NetSurf libnsbmp through 0.1.7 contains an out-of-bounds read vulnerability in bmp_decode_rle8() and bmp_decode_rle4() because absolute-run bound checks omit the word-alignment pad byte. Attackers can supply a crafted RLE8 or RLE4 BMP ending on an odd-length absolute run to cause a one-byte heap over-read, crashing applications decoding untrusted images.
Affected products
1Patches
Vulnerability mechanics
References
5- download.netsurf-browser.org/libs/releases/libnsbmp-0.1.7-src.tar.gznvd
- github.com/netsurf-browser/libnsbmp/blob/ea063c9f46acb43e90208da14073332b505ef7e7/src/libnsbmp.cnvd
- github.com/netsurf-browser/libnsbmp/blob/ea063c9f46acb43e90208da14073332b505ef7e7/src/libnsbmp.cnvd
- hackmd.io/@haind-pwn/libnsbmp-rle-absolute-pad-and-ico-mask-oob-readnvd
- www.vulncheck.com/advisories/netsurf-libnsbmp-through-0.1.7-out-of-bounds-read-in-rle8-and-rle4-decodersnvd
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