Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: loop: loop_set_status_from_info() check before assignment In loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should be checked before reassignment, because if an overflow error occurs, the original correct value will be changed to the wrong value, and it will not be changed back. More, the original patch did not solve the problem, the value was set and ioctl returned an error, but the subsequent io used the value in the loop driver, which still caused an alarm: loop_handle_cmd do_req_filebacked loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; lo_rw_aio cmd->iocb.ki_pos = pos
References
- https://git.kernel.org/stable/c/258809bf22bf71d53247856f374f2b1d055f2fd4
- https://git.kernel.org/stable/c/2ea7077748e5d7cc64f1c31342c802fe66ea7426
- https://git.kernel.org/stable/c/3e7d0968203d668af6036b9f9199c7b62c8a3581
- https://git.kernel.org/stable/c/4be26d553a3f1d4f54f25353d1496c562002126d
- https://git.kernel.org/stable/c/6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb
- https://git.kernel.org/stable/c/832580af82ace363205039a8e7c4ef04552ccc1a
- https://git.kernel.org/stable/c/861021710bba9dfa0749a3c209a6c1773208b1f1
- https://git.kernel.org/stable/c/9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa
- https://git.kernel.org/stable/c/c79a924ed6afac1708dfd370ba66bcf6a852ced6
FAQ
What is CVE-2023-53820?
CVE-2023-53820 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: loop: loop_set_status_from_info() check before assignment In loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit shoul...
How severe is CVE-2023-53820?
CVSS scoring is not yet available for CVE-2023-53820. Check NVD for updates.
Is there a patch for CVE-2023-53820?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.