CVE-2026-34961

barebox prior to version 2026.04.0 contains out-of-bounds read vulnerabilities in ext4 extent parsing due to missing validation of the ehentries field against buffer capacity in fs/ext4/ext4common.c. Attackers can supply a malicious ext4 filesystem image via USB, SD card, or network boot to trigg...

CVE-2026-34961 barebox ext4 Extent Parsing Out-of-Bounds Read

barebox prior to version 2026.04.0 contains out-of-bounds read vulnerabilities in ext4 extent parsing due to missing validation of the ehentries field against buffer capacity in fs/ext4/ext4common.c. Attackers can supply a malicious ext4 filesystem image via USB, SD card, or network boot to trigg...

CVE-2026-34961

Barebox before 2026.04.0 has a heap out-of-bounds read in ext4 extent parsing due to missing validation of eh_entries against buffer capacity in fs/ext4/ext4_common.c. An attacker could supply a malicious ext4 image over USB, SD card, or network boot to trigger reads beyond the allocated buffer d...

Barebox 缓冲区错误漏洞

Barebox is a versatile and flexible bootloader developed by Barebox Open Source. Versions of Barebox prior to 2026.04.0 contained a buffer error vulnerability. This vulnerability stemmed from the lack of verification of the ehentry fields and buffer capacity during ext4 extent parsing. It could...

CVE-2022-48631

In the Linux kernel, the following vulnerability has been resolved: ext4: fix bug in extents parsing when ehentries == 0 and ehdepth 0 When walking through an inode extents, the ext4extbinsearchidx function assumes that the extent header has been previously validated. However, there are no checks...