ceph: give up on paths longer than PATH_MAX
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://git.kernel.org/stable/c/0f2b2d9e881c90402dbe28f9ba831775b7992e1f
- https://git.kernel.org/stable/c/d42ad3f161a5a487f81915c406f46943c7187a0a
- https://git.kernel.org/stable/c/e4b168c64da06954be5d520f6c16469b1cadc069
- https://git.kernel.org/stable/c/c47ed91156daf328601d02b58d52d9804da54108
- https://git.kernel.org/stable/c/99a37ab76a315c8307eb5b0dc095d8ad9d8efeaa
- https://git.kernel.org/stable/c/550f7ca98ee028a606aa75705a7e77b1bd11720f
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Weaknesses (CWE)
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MITRE ATT&CK TTPs
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