CVE-2026-31449 ext4: validate p_idx bounds in ext4_ext_correct_indexes

In the Linux kernel, the following vulnerability has been resolved: ext4: validate pidx bounds in ext4extcorrectindexes ext4extcorrectindexes walks up the extent tree correcting index entries when the first extent in a leaf is modified. Before accessing pathk.pidx-eiblock, there is no validation...

PT-2026-34354

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ext4 ext correct indexes function, which corrects index entries when the first extent in a leaf is modified. The function fails to validate that the p idx pointer...