cve-2022-48933
Vulnerability from cvelistv5
Published
2024-08-22 03:31
Modified
2025-05-04 08:26
Severity ?
Summary
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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52Patch
Impacted products
Vendor Product Version
Linux Linux Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
Version: d62d0ba97b5803183e70cfded7f7b9da76893bf5
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   Linux Linux Version: 5.4
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