Debian: CVE-2022-48933: linux -- security update

Debian: CVE-2022-48933: linux -- security update

Severity

5

CVSS

(AV:L/AC:L/Au:S/C:N/I:N/A:C)

Published

08/22/2024

Created

08/24/2024

Added

08/23/2024

Modified

01/30/2025

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().

Solution(s)

• debian-upgrade-linux

References

• https://attackerkb.com/topics/cve-2022-48933
• CVE - 2022-48933