Out-of-bounds Read Affecting kernel-tools-libs-devel package, versions <0:4.18.0-553.22.1.el8_10
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Test your applications- Snyk ID SNYK-RHEL8-KERNELTOOLSLIBSDEVEL-7596336
- published 5 Aug 2024
- disclosed 29 Jul 2024
Introduced: 29 Jul 2024
CVE-2024-41014 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-tools-libs-devel to version 0:4.18.0-553.22.1.el8_10 or higher.
This issue was patched in RHSA-2024:7000.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs-devel package and not the kernel-tools-libs-devel package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
xfs: add bounds checking to xlog_recover_process_data
There is a lack of verification of the space occupied by fixed members of xlog_op_header in the xlog_recover_process_data.
We can create a crafted image to trigger an out of bounds read by following these steps: 1) Mount an image of xfs, and do some file operations to leave records 2) Before umounting, copy the image for subsequent steps to simulate abnormal exit. Because umount will ensure that tail_blk and head_blk are the same, which will result in the inability to enter xlog_recover_process_data 3) Write a tool to parse and modify the copied image in step 2 4) Make the end of the xlog_op_header entries only 1 byte away from xlog_rec_header->h_size 5) xlog_rec_header->h_num_logops++ 6) Modify xlog_rec_header->h_crc
Fix: Add a check to make sure there is sufficient space to access fixed members of xlog_op_header.