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CVE-2026-90209 Details

Description

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix deadlock during unregister Unregistering an s390dbf debug area while one of the associated debugfs files is being written to can cause a deadlock: $ echo >.../vmur/level $ rmmod vmur =================================================== debugfs write debugfs_file_get() debug_unregister() mutex_lock(debug_mutex) debugfs_remove() wait for debugfs_file_put() debug_file_ops.write() debug_input() mutex_lock(debug_mutex) ==> DEADLOCK Fix this by splitting debug_unregister() into an s390dbf and debugfs part, and running only the s390dbf part with debug_mutex locked.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/183f8f6d64bb0510070c856b9927618c53014a7b	kernel.org
https://git.kernel.org/stable/c/445c31ac638fd1af203d79bdf25fc0cb3149fbbc	kernel.org
https://git.kernel.org/stable/c/45bb341d1b73eb293e0dd43d9b72bbc8b615d0ba	kernel.org
https://git.kernel.org/stable/c/54e1259b75d6402a1d0cfb822b9bb2c507e53dab	kernel.org
https://git.kernel.org/stable/c/5d83f3faa3fb7f23f298cfd40382611999de5d1d	kernel.org
https://git.kernel.org/stable/c/a08b70ed2d1ec907353a72f15163b8e34ff4b2f8	kernel.org
https://git.kernel.org/stable/c/a214c3dacc779b2afcb0ac9c8001e45ee4ffb2ed	kernel.org

see all 7 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes