Incorrect Type Conversion or Cast The advisory has been revoked - it doesn't affect any version of package kernel-zfcpdump-modules-internal (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-KERNELZFCPDUMPMODULESINTERNAL-9938810
- published2 May 2025
- disclosed1 May 2025
Introduced: 1 May 2025
CVE-2022-49873 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-zfcpdump-modules-internal package and not the kernel-zfcpdump-modules-internal package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix wrong reg type conversion in release_reference()
Some helper functions will allocate memory. To avoid memory leaks, the verifier requires the eBPF program to release these memories by calling the corresponding helper functions.
When a resource is released, all pointer registers corresponding to the resource should be invalidated. The verifier use release_references() to do this job, by apply __mark_reg_unknown() to each relevant register.
It will give these registers the type of SCALAR_VALUE. A register that will contain a pointer value at runtime, but of type SCALAR_VALUE, which may allow the unprivileged user to get a kernel pointer by storing this register into a map.
Using __mark_reg_not_init() while NOT allow_ptr_leaks can mitigate this problem.
References
- https://access.redhat.com/security/cve/CVE-2022-49873
- https://git.kernel.org/stable/c/466ce46f251dfb259a8cbaa895ab9edd6fb56240
- https://git.kernel.org/stable/c/ae5ccad6c711db0f2ca1231be051935dd128b8f5
- https://git.kernel.org/stable/c/cedd4f01f67be94735f15123158f485028571037
- https://git.kernel.org/stable/c/f1db20814af532f85e091231223e5e4818e8464b