CVE-2022-50077

Summary

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

apparmor: fix reference count leak in aa_pivotroot()

The aa_pivotroot() function has a reference counting bug in a specific path. When aa_replace_current_label() returns on success, the function forgets to decrement the reference count of “target”, which is increased earlier by build_pivotroot(), causing a reference leak.

Fix it by decreasing the refcount of “target” in that path.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < d53194707d2a1851be027cd74266b96ceff799d3affected
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < f4d5c7796571624e3f380b447ada52834270a287affected
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < ef6fb6f0d0d8440595b45a7e53c6162c737177f4affected
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < 2ceeb3296e9dde1d5772348046affcefdea605e2affected
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < 64103ea357734b82384c925cba4758fdb909be0caffected
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < 3ca40ad7afae144169a43988ef1a3f16182faf0aaffected
LinuxLinux2ea3ffb7782a84da33a8382f13ebd016da50079b < 11c3627ec6b56c1525013f336f41b79a983b4d46affected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux4.14.291 <= 4.14.*unaffected
LinuxLinux4.19.256 <= 4.19.*unaffected
LinuxLinux5.4.211 <= 5.4.*unaffected
LinuxLinux5.10.138 <= 5.10.*unaffected
LinuxLinux5.15.63 <= 5.15.*unaffected
LinuxLinux5.19.4 <= 5.19.*unaffected
LinuxLinux6.0 <= *unaffected

Weaknesses

References