apparmor: fix reference count leak in aa_pivotroot()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
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 products
Linux · LinuxReferences
https://git.kernel.org/stable/c/11c3627ec6b56c1525013f336f41b79a983b4d46https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0ahttps://git.kernel.org/stable/c/64103ea357734b82384c925cba4758fdb909be0chttps://git.kernel.org/stable/c/d53194707d2a1851be027cd74266b96ceff799d3https://git.kernel.org/stable/c/ef6fb6f0d0d8440595b45a7e53c6162c737177f4https://git.kernel.org/stable/c/f4d5c7796571624e3f380b447ada52834270a287