CVE-2023-54305
Published Dec 30, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: refuse to create ea block when umounted The ea block expansion need to access s_root while it is already set as NULL when umount is triggered. Refuse this request to avoid panic.
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References
Other References
https://git.kernel.org/stable/c/05cbf6ddd9847c7b4f0662c048f195b09405a9d0
https://git.kernel.org/stable/c/0dc0fa313bb4e86382a3e7125429710d44383196
https://git.kernel.org/stable/c/116008ada3d0de4991099edaf6b8c2e9cd6f225a
https://git.kernel.org/stable/c/21f6a80d9234422e2eb445734b22c78fc5bf6719
https://git.kernel.org/stable/c/a458a8c1d1fc4e10a1813786132b09a3863ad3f2
https://git.kernel.org/stable/c/a92b67e768bde433b9385cde56c09deb58db269e
https://git.kernel.org/stable/c/aedea161d031502a423ed1c7597754681a4f8cda
https://git.kernel.org/stable/c/f31173c19901a96bb2ebf6bcfec8a08df7095c91
Frequently Asked Questions
What is CVE-2023-54305? +
In the Linux kernel, the following vulnerability has been resolved:
ext4: refuse to create ea block when umounted
The ea block expansion need to access s_root while it is
already set as NULL when umount is triggered. Refuse this
request to avoid panic.
How do I check if I'm vulnerable to CVE-2023-54305? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.