cve-2024-41014
Vulnerability from cvelistv5
Published
2024-07-29 06:37
Modified
2024-12-19 09:10
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7cd9f0a33e738cd58876f1bc8d6c1aa5bc4fc8c1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1e3efe783365db59da88f08a2e0bfe1cc95b143
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb63435b7c7dc112b1ae1baea5486e0a6e27b196
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fb63435b7c7dc112b1ae1baea5486e0a6e27b196
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

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