Resource Leak Affecting kernel-cross-headers package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELCROSSHEADERS-7824570
- published 23 Aug 2024
- disclosed 22 Aug 2024
Introduced: 22 Aug 2024
CVE-2022-48933 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-cross-headers.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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
- https://access.redhat.com/security/cve/CVE-2022-48933
- https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4
- https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87
- https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826
- https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7
- https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52