Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: fix potential key use-after-free

When ieee80211_key_link() is called by ieee80211_gtk_rekey_add()
but returns 0 due to KRACK protection (identical key reinstall),
ieee80211_gtk_rekey_add() will still return a pointer into the
key, in a potential use-after-free. This normally doesn't happen
since it's only called by iwlwifi in case of WoWLAN rekey offload
which has its own KRACK protection, but still better to fix, do
that by returning an error code and converting that to success on
the cfg80211 boundary only, leaving the error for bad callers of
ieee80211_gtk_rekey_add().

Classification

CVE ID: CVE-2023-52530

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/2408f491ff998d674707725eadc47d8930aced09
https://git.kernel.org/stable/c/e8e599a635066c50ac214c3e10858f1d37e03022
https://git.kernel.org/stable/c/e8a834eb09bb95c2bf9c76f1a28ecef7d8c439d0
https://git.kernel.org/stable/c/2f4e16e39e4f5e78248dd9e51276a83203950b36
https://git.kernel.org/stable/c/65c72a7201704574dace708cbc96a8f367b1491d
https://git.kernel.org/stable/c/31db78a4923ef5e2008f2eed321811ca79e7f71b

Timeline