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Change History

In the Linux kernel, the following vulnerability has been resolved:

block: Fix wrong offset in bio_truncate()

bio_truncate() clears the buffer outside of last block of bdev, however
current bio_truncate() is using the wrong offset of page. So it can
return the uninitialized data.

This happened when both of truncated/corrupted FS and userspace (via
bdev) are trying to read the last of bdev.

kernel.org https://git.kernel.org/stable/c/3ee859e384d453d6ac68bfd5971f630d9fa46ad3 [No types assigned]

kernel.org https://git.kernel.org/stable/c/4633a79ff8bc82770486a063a08b55e5162521d8 [No types assigned]

kernel.org https://git.kernel.org/stable/c/6cbf4c731d7812518cd857c2cfc3da9fd120f6ae [No types assigned]

kernel.org https://git.kernel.org/stable/c/941d5180c430ce5b0f7a3622ef9b76077bfa3d82 [No types assigned]

kernel.org https://git.kernel.org/stable/c/b63e120189fd92aff00096d11e2fc5253f60248b [No types assigned]