7.5 High

CVE-2022-48747 In the Linux kernel, the following vulnerability has been resolved: block: Fix wrong offset in bio_truncate()…

Description

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.

Affected products and versions

Product	Affected versions	Fixed in
Linux 5.17	earliest → < 5.17	5.17
Linux 5.16	earliest → < 5.16.5	5.16.5
Linux 5.15	earliest → < 5.15.19	5.15.19
Linux 5.10	earliest → < 5.10.96	5.10.96
Linux	5.5	No fix stated
Linux 5.4	earliest → < 5.4.176	5.4.176
linux_kernel 5.17	earliest → < 5.17	5.17