CVE-2022-50020
ext4: avoid resizing to a partial cluster size
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.
Affected products
Linux · LinuxWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://git.kernel.org/stable/c/0082e99a9074ff88eff729c70c93454c8588d8e1https://git.kernel.org/stable/c/69cb8e9d8cd97cdf5e293b26d70a9dee3e35e6bdhttps://git.kernel.org/stable/c/72b850a2a996f72541172e7cf686d54a2b29bcd8https://git.kernel.org/stable/c/7bdfb01fc5f6b3696728aeb527c50386e0ee09a1https://git.kernel.org/stable/c/80288883294c5b4ed18bae0d8bd9c4a12f297074https://git.kernel.org/stable/c/a6805b3dcf5cd41f2ae3a03dca43411135b99849