CVE-2022-50020 Information

Jun 19, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

ext4: avoid resizing to a partial cluster size

This patch avoids an attempt to resize the filesystem to an unaligned cluster boundary. An online resize to a size that is not integral to cluster size results in the last iteration attempting to grow the fs by a negative amount which trips a BUG_ON and leaves the fs with a corrupted in-memory superblock.

Reference

https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1 https://git.kernel.org/stable/c/53f62a4201be1cfc1e3c971e566888b182c3ffb0 https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bd https://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8 https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1 https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074 https://git.kernel.org/stable/c/952b3dc02baaae6a69c71c0aca23e06741182d9a https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849

CNNVD-202506-2307 (Published: 2025-06-18)

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