CVE-2026-89618
In the Linux kernel, the following vulnerability has been resolved: eventfs: Initialize ei->children and ei->list in init_ei() eventfs_create_dir() allocates the eventfs_inode and initializes it with init_ei(). But this does not initialize the eventfs_inode list_heads. If the eventfs_create_dir() fails due to memory pressure, it will call free_ei() before it initialized the lists, and that checks to make sure the eventfs_inode has no children. But because the list wasn't initialized, it will give a false warning. Fix it by moving the list initialization into init_ei(). [ Rewrote change log ]
Affected versions
Linux kernel versions
6.6.18,
6.7
and later are affected. Fixed in
6.6.157,
6.12.109,
6.18.50,
7.2.4,
7.3-rc1
and their respective stable series.
References
5 totalFrequently asked questions
-
What is CVE-2026-89618?
CVE-2026-89618 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.6.18 onward and has been patched in 6.6.157, 6.12.109, 6.18.50 and others. CVE-2026-89618 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-89618?
Yes. CVE-2026-89618 has been patched. Fixed versions include 6.6.157, 6.12.109, 6.18.50 and others. If you are running Linux kernel 6.6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-89618 actively exploited?
No. CVE-2026-89618 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.