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Oracle Linux: (CVE-2024-26993) (Multiple Advisories): kernel security and bug fix update

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Oracle Linux: (CVE-2024-26993) (Multiple Advisories): kernel security and bug fix update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/01/2024
Created
06/07/2024
Added
06/06/2024
Modified
06/06/2024

Description

In the Linux kernel, the following vulnerability has been resolved:

fs: sysfs: Fix reference leak in sysfs_break_active_protection()

The sysfs_break_active_protection() routine has an obvious reference

leak in its error path. If the call to kernfs_find_and_get() fails then

kn will be NULL, so the companion sysfs_unbreak_active_protection()

routine won't get called (and would only cause an access violation by

trying to dereference kn->parent if it was called). As a result, the

reference to kobj acquired at the start of the function will never be

released.

Fix the leak by adding an explicit kobject_put() call when kn is NULL.

Solution(s)

  • oracle-linux-upgrade-kernel

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