CVE-2023-0461

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-0461
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-0461.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-0461
Downstream
Related
Published
2023-02-28T15:15:11Z
Modified
2025-08-09T20:01:28Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIGTLS or CONFIGXFRM_ESPINTCP has to be configured, but the operation does not require any privilege.

There is a use-after-free bug of icskulpdata of a struct inetconnectionsock.

When CONFIGTLS is enabled, user can install a tls context (struct tlscontext) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable.

The setsockopt TCP_ULP operation does not require any privilege.

We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c

References

Affected packages