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.

Classification

CVE ID: CVE-2024-36931

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 5.08% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

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

Timeline