CVE-2024-53685

Published: January 13, 2025Last modified: January 13, 2025

Description

In the Linux kernel, the following vulnerability has been resolved: ceph: give up on paths longer than PATH_MAX If the full path to be built by ceph_mdsc_build_path() happens to be longer than PATH_MAX, then this function will enter an endless (retry) loop, effectively blocking the whole task. Most of the machine becomes unusable, making this a very simple and effective DoS vulnerability. I cannot imagine why this retry was ever implemented, but it seems rather useless and harmful to me. Let's remove it and fail with ENAMETOOLONG instead.

Status

References

• https://git.kernel.org/stable/c/0f2b2d9e881c90402dbe28f9ba831775b7992e1f
• https://git.kernel.org/stable/c/550f7ca98ee028a606aa75705a7e77b1bd11720f
• https://git.kernel.org/stable/c/99a37ab76a315c8307eb5b0dc095d8ad9d8efeaa
• https://git.kernel.org/stable/c/c47ed91156daf328601d02b58d52d9804da54108
• https://git.kernel.org/stable/c/d42ad3f161a5a487f81915c406f46943c7187a0a
• https://git.kernel.org/stable/c/e4b168c64da06954be5d520f6c16469b1cadc069