s390/cio: Ensure the copied buf is NUL terminated
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/cio: Ensure the copied buf is NUL terminated Currently, we allocate a lbuf-sized kernel buffer and copy lbuf from userspace to that buffer. Later, we use scanf on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using scanf. Fix this issue by using memdup_user_nul instead.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://git.kernel.org/stable/c/c9d48ce163305595ae20aee27774192476d5e6a5
- https://git.kernel.org/stable/c/10452edd175fcc4fd0f5ac782ed2a002e3e5d65c
- https://git.kernel.org/stable/c/84b38f48836662c4bfae646c014f4e981e16a2b2
- https://git.kernel.org/stable/c/06759ebaf75c19c87b2453a5e130e9e61e9b5d65
- https://git.kernel.org/stable/c/da7c622cddd4fe36be69ca61e8c42e43cde94784
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Weaknesses (CWE)
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MITRE ATT&CK TTPs
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