CVE-2023-52458 Information

Description

In the Linux kernel the following vulnerability has been resolved:

block: add check that partition length needs to be aligned with block size

Before calling add partition or resize partition there is no check on whether the length is aligned with the logical block size. If the logical block size of the disk is larger than 512 bytes then the partition size maybe not the multiple of the logical block size and when the last sector is read bio_truncate() will adjust the bio size resulting in an IO error if the size of the read command is smaller than the logical block size.If integrity data is supported this will also result in a null pointer dereference when calling bio_integrity_free.

Reference

https://git.kernel.org/stable/c/5010c27120962c85d2f421d2cf211791c9603503 https://git.kernel.org/stable/c/ef31cc87794731ffcb578a195a2c47d744e25fb8 https://git.kernel.org/stable/c/cb16cc1abda18a9514106d2ac8c8d7abc0be5ed8 https://git.kernel.org/stable/c/bcdc288e7bc008daf38ef0401b53e4a8bb61bbe5 https://git.kernel.org/stable/c/6f64f866aa1ae6975c95d805ed51d7e9433a0016