# CVE-2022-48933: linux: In the Linux kernel, the following vulnerability has been resolved:  netfilter: nf_tables: fix memory leak during sta...

CVE-2022-48933 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48933, released August 22, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48933
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 22, 2024

## Description

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().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.12-1 | [DEBIAN-CVE-2022-48933](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48933.md) | Aug 22, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.12-1 | [DEBIAN-CVE-2022-48933](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48933.md) | Aug 22, 2024 |
| Linux | linux Debian 14 | 5.16.12-1 | [DEBIAN-CVE-2022-48933](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48933.md) | Aug 22, 2024 |

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