- Vulnerability/
- CVE-2024-53685
CVE-2024-53685: ceph: give up on paths longer than PATH_MAX
First published: Sat Jan 11 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- 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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53685
- https://nvd.nist.gov/vuln/detail/CVE-2024-53685
- https://launchpad.net/bugs/cve/CVE-2024-53685
- https://security-tracker.debian.org/tracker/CVE-2024-53685
- https://ubuntu.com/security/CVE-2024-53685
- https://git.kernel.org/linus/550f7ca98ee028a606aa75705a7e77b1bd11720f
Frequently Asked Questions
What is the severity of CVE-2024-53685?
CVE-2024-53685 has a medium severity rating due to its potential to create an endless loop and block processes.
How do I fix CVE-2024-53685?
To fix CVE-2024-53685, ensure your Linux kernel is updated to the latest patched version that addresses this vulnerability.
What are the potential impacts of CVE-2024-53685?
CVE-2024-53685 can result in system instability and denial of service due to the endless loop behavior.
Which systems are affected by CVE-2024-53685?
CVE-2024-53685 affects the Linux Kernel, specifically impacting systems that utilize the Ceph file system.
What versions of the Linux kernel are vulnerable to CVE-2024-53685?
All versions of the Linux kernel prior to the patch for CVE-2024-53685 are considered vulnerable.
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