CVE-2022-50243
Vulnerability Scoring
Analysis In Progress
CVE-2022-50243 Vulnerability Analysis & Exploit Details
CVE-2022-50243
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-2022-50243 Details
Status: Awaiting Analysis
Published on: 15 Sep 2025, 14:15 UTC
CVSS Release:
CVE-2022-50243 Vulnerability Summary
CVE-2022-50243: In the Linux kernel, the following vulnerability has been resolved: sctp: handle the error returned from sctp_auth_asoc_init_active_key When it returns an error from sctp_auth_asoc_init_active_key(), the active_key is actually not updated. The old sh_key will be freeed while it's still used as active key in asoc. Then an use-after-free will be triggered when sending patckets, as found by syzbot: sctp_auth_shkey_hold+0x22/0xa0 net/sctp/auth.c:112 sctp_set_owner_w net/sctp/socket.c:132 [inline] sctp_sendmsg_to_asoc+0xbd5/0x1a20 net/sctp/socket.c:1863 sctp_sendmsg+0x1053/0x1d50 net/sctp/socket.c:2025 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 This patch is to fix it by not replacing the sh_key when it returns errors from sctp_auth_asoc_init_active_key() in sctp_auth_set_key(). For sctp_auth_set_active_key(), old active_key_id will be set back to asoc->active_key_id when the same thing happens.
Assessing the Risk of CVE-2022-50243
Access Complexity Graph
The exploitability of CVE-2022-50243 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-2022-50243
No exploitability data is available for CVE-2022-50243.
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-2022-50243, 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-2022-50243, 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-2022-50243 does not compromise confidentiality.
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Integrity:
None
CVE-2022-50243 does not impact data integrity.
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Availability:
None
CVE-2022-50243 does not affect system availability.
CVE-2022-50243 References
External References
- https://git.kernel.org/stable/c/022152aaebe116a25c39818a07e175a8cd3c1e11
- https://git.kernel.org/stable/c/0f90099d18e3abdc01babf686f41f63fe04939c1
- https://git.kernel.org/stable/c/19d636b663e0e92951bba5fced929ca7fd25c552
- https://git.kernel.org/stable/c/382ff44716603a54f5fd238ddec6a2468e217612
- https://git.kernel.org/stable/c/3b0fcf5e29c0940e1169ce9c44f73edd98bdf12d
- https://git.kernel.org/stable/c/b8fa99a3a11bdd77fef6b4a97f1021eb30b5ba40
- https://git.kernel.org/stable/c/f65955340e0044f5c41ac799a01698ac7dee8a4e
CWE Common Weakness Enumeration
Unknown
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