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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0f2b2d9e881c90402dbe28f9ba831775b7992e1f Patch
- git.kernel.org/stable/c/550f7ca98ee028a606aa75705a7e77b1bd11720f Patch
- git.kernel.org/stable/c/99a37ab76a315c8307eb5b0dc095d8ad9d8efeaa Patch
- git.kernel.org/stable/c/c47ed91156daf328601d02b58d52d9804da54108 Patch
- git.kernel.org/stable/c/d42ad3f161a5a487f81915c406f46943c7187a0a Patch
- git.kernel.org/stable/c/e4b168c64da06954be5d520f6c16469b1cadc069 Patch
- lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 14 · as of 7 November 2026
- CWE
- CWE-835
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