CVE-2022-49814
Vulnerability Scoring
Analysis In Progress
CVE-2022-49814 Vulnerability Analysis & Exploit Details
CVE-2022-49814
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-2022-49814 Details
Status: Awaiting Analysis
Last updated: 🕜 02 May 2025, 13:53 UTC
Originally published on: 🕒 01 May 2025, 15:16 UTC
CVSS Release:
CVE-2022-49814 Vulnerability Summary
CVE-2022-49814: In the Linux kernel, the following vulnerability has been resolved: kcm: close race conditions on sk_receive_queue sk->sk_receive_queue is protected by skb queue lock, but for KCM sockets its RX path takes mux->rx_lock to protect more than just skb queue. However, kcm_recvmsg() still only grabs the skb queue lock, so race conditions still exist. We can teach kcm_recvmsg() to grab mux->rx_lock too but this would introduce a potential performance regression as struct kcm_mux can be shared by multiple KCM sockets. So we have to enforce skb queue lock in requeue_rx_msgs() and handle skb peek case carefully in kcm_wait_data(). Fortunately, skb_recv_datagram() already handles it nicely and is widely used by other sockets, we can just switch to skb_recv_datagram() after getting rid of the unnecessary sock lock in kcm_recvmsg() and kcm_splice_read(). Side note: SOCK_DONE is not used by KCM sockets, so it is safe to get rid of this check too. I ran the original syzbot reproducer for 30 min without seeing any issue.
Assessing the Risk of CVE-2022-49814
Access Complexity Graph
The exploitability of CVE-2022-49814 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-2022-49814
No exploitability data is available for CVE-2022-49814.
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-2022-49814, 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-2022-49814, 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-2022-49814 does not compromise confidentiality.
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Integrity:
None
CVE-2022-49814 does not impact data integrity.
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Availability:
None
CVE-2022-49814 does not affect system availability.
CVE-2022-49814 References
External References
- https://git.kernel.org/stable/c/22f6b5d47396b4287662668ee3f5c1f766cb4259
- https://git.kernel.org/stable/c/4154b6afa2bd639214ff259d912faad984f7413a
- https://git.kernel.org/stable/c/5121197ecc5db58c07da95eb1ff82b98b121a221
- https://git.kernel.org/stable/c/bf92e54597d842da127c59833b365d6faeeaf020
- https://git.kernel.org/stable/c/ce57d6474ae999a3b2d442314087473a646a65c7
- https://git.kernel.org/stable/c/d9ad4de92e184b19bcae4da10dac0275abf83931
- https://git.kernel.org/stable/c/f7b0e95071bb4be4b811af3f0bfc3e200eedeaa3
CWE Common Weakness Enumeration
Unknown
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