CVE-2022-48933 (GCVE-0-2022-48933)

Vulnerability from cvelistv5 – Published: 2024-08-22 03:31 – Updated: 2026-05-11 18:49
VLAI
Title
netfilter: nf_tables: fix memory leak during stateful obj update
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().
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d62d0ba97b5803183e70cfded7f7b9da76893bf5 , < 53026346a94c43f35c32b18804041bc483271d87 (git)
Affected: d62d0ba97b5803183e70cfded7f7b9da76893bf5 , < 7e9880e81d3fd6a43c202f205717485290432826 (git)
Affected: d62d0ba97b5803183e70cfded7f7b9da76893bf5 , < e96e204ee6fa46702f6c94c3c69a09e69e0eac52 (git)
Affected: d62d0ba97b5803183e70cfded7f7b9da76893bf5 , < 34bb90e407e3288f610558beaae54ecaa32b11c4 (git)
Affected: d62d0ba97b5803183e70cfded7f7b9da76893bf5 , < dad3bdeef45f81a6e90204bcc85360bb76eccec7 (git)
Create a notification for this product.
Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.4.182 , ≤ 5.4.* (semver)
Unaffected: 5.10.103 , ≤ 5.10.* (semver)
Unaffected: 5.15.26 , ≤ 5.15.* (semver)
Unaffected: 5.16.12 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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