A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
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DLA-3710-1 | linux security update |
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EUVD-2023-42924 | A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. |
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USN-6461-1 | Linux kernel (OEM) vulnerabilities |
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USN-6494-1 | Linux kernel vulnerabilities |
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USN-6494-2 | Linux kernel vulnerabilities |
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USN-6532-1 | Linux kernel vulnerabilities |
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USN-6534-1 | Linux kernel vulnerabilities |
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USN-6534-2 | Linux kernel vulnerabilities |
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USN-6534-3 | Linux kernel vulnerabilities |
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USN-6536-1 | Linux kernel vulnerabilities |
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USN-6537-1 | Linux kernel (GCP) vulnerabilities |
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USN-6548-1 | Linux kernel vulnerabilities |
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USN-6548-2 | Linux kernel vulnerabilities |
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USN-6548-3 | Linux kernel (Oracle) vulnerabilities |
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USN-6549-1 | Linux kernel vulnerabilities |
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USN-6549-2 | Linux kernel (GKE) vulnerabilities |
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USN-6549-3 | Linux kernel (Low Latency) vulnerabilities |
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USN-6548-4 | Linux kernel (GKE) vulnerabilities |
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USN-6548-5 | Linux kernel (IoT) vulnerabilities |
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USN-6549-4 | Linux kernel (Intel IoTG) vulnerabilities |
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USN-6549-5 | Linux kernel vulnerabilities |
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USN-6573-1 | Linux kernel (Azure) vulnerabilities |
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USN-6635-1 | Linux kernel (GCP) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
This flaw can be mitigated by preventing the affected Passive OS Fingerprinting match module (`xt_osf`) from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.
References
History
Fri, 22 Nov 2024 12:00:00 +0000
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Fri, 13 Sep 2024 19:45:00 +0000
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-09-25T13:23:18.663Z
Reserved: 2023-07-25T16:01:14.835Z
Link: CVE-2023-39189

No data.

Status : Modified
Published: 2023-10-09T18:15:10.160
Modified: 2024-11-21T08:14:52.793
Link: CVE-2023-39189


No data.