CVE-2026-90259 | BDVDB-2026-376038 Detail

Description#

In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: fix a wrong length calculation in qgroup_free_reserved_data() In that function, we round down the start position and round up the ending position. But during the calculation of @len, we use "round_up(start + len, sectorsize)", which is the rounded up end position, not the rounded up length. Which results a much larger length, and later we are still using "start + len", which is completely incorrect. Fix it by declaring a local @aligned_start and @aligned_len and use them instead.

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History#

1. Version 12026-09-17Record published in the CVE List.
2. Version 22026-10-30Most recent update recorded in the CVE List.