CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix memory leak during stateful obj update
stateful objects can be updated from the control plane.
The transaction logic allocates a temporary object for this purpose.
The ->init function was called for this object, so plain kfree() leaks
resources. We must call ->destroy function of the object.
nft_obj_destroy does this, but it also decrements the module refcount,
but the update path doesn’t increment it.
To avoid special-casing the update object release, do module_get for
the update case too and release it via nft_obj_destroy().
git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4
git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87
git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826
git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7
git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52
security-tracker.debian.org/tracker/CVE-2022-48933