CVE-2022-49907
Vulnerability Scoring
Analysis In Progress
CVE-2022-49907 Vulnerability Analysis & Exploit Details
CVE-2022-49907
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2022-49907 Details
Status: Awaiting Analysis
Last updated: 🕜 02 May 2025, 13:52 UTC
Originally published on: 🕒 01 May 2025, 15:16 UTC
CVSS Release:
CVE-2022-49907 Vulnerability Summary
CVE-2022-49907: In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix undefined behavior in bit shift for __mdiobus_register Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c __mdiobus_register+0x49d/0x4e0 fixed_mdio_bus_init+0xd8/0x12d do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30 </TASK>
Assessing the Risk of CVE-2022-49907
Access Complexity Graph
The exploitability of CVE-2022-49907 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2022-49907
No exploitability data is available for CVE-2022-49907.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2022-49907, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2022-49907, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2022-49907 does not compromise confidentiality.
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Integrity:
None
CVE-2022-49907 does not impact data integrity.
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Availability:
None
CVE-2022-49907 does not affect system availability.
CVE-2022-49907 References
External References
- https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7
- https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a
- https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2
- https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d
- https://git.kernel.org/stable/c/6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0
- https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e
- https://git.kernel.org/stable/c/985a88bf0b27193522bba7856b1763f428cef19d
- https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973
CWE Common Weakness Enumeration
Unknown
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