CVE-2022-48933

Advisory lineage Upstream: 0 Downstream: 6
Analyzed
Published: 22 Aug 2024, 03:31
Last modified:11 May 2026, 18:49

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Aug 2024, 03:31
Published
Vulnerability first disclosed
11 May 2026, 18:49
Last Modified
Vulnerability information updated

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().

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 4%

Techniques & Countermeasures

  • CWE-401•Missing Release of Memory after Effective Lifetime

    The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Affected Systems

  • linux•linux

    ≥ d62d0ba97b5803183e70cfded7f7b9da76893bf5, < 53026346a94c43f35c32b18804041bc483271d87 | ≥ d62d0ba97b5803183e70cfded7f7b9da76893bf5, < 7e9880e81d3fd6a43c202f205717485290432826 | ≥ d62d0ba97b5803183e70cfded7f7b9da76893bf5, < e96e204ee6fa46702f6c94c3c69a09e69e0eac52 | ≥ d62d0ba97b5803183e70cfded7f7b9da76893bf5, < 34bb90e407e3288f610558beaae54ecaa32b11c4 | ≥ d62d0ba97b5803183e70cfded7f7b9da76893bf5, < dad3bdeef45f81a6e90204bcc85360bb76eccec7 | 5.4

  • linux•linux_kernel

    ≥ 5.4, < 5.4.182 | ≥ 5.5, < 5.10.103 | ≥ 5.11, < 5.15.26 | ≥ 5.16, < 5.16.12

References (5)