[SRU][J/F][PATCH 0/1] CVE-2023-52530

[Bethany Jamison]

[Impact]

 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().

[Fix]

Mantic:	pending
Jammy: 	Backport - contect conflict with neighboring line that didn't seem
	to affect the fix change so I implemented the fix change directly
Focal:	J patch applied cleanly.
Bionic:	fix sent to esm ML
Xenial:	fix sent to esm ML
Trusty:	not-affected

[Test Case]

Compile and boot tested.

[Where problems could occur]

This fix affects those who use the mac80211 framework, an issue with this
fix would be visable via unpredicted system behavior or a system crash.

Johannes Berg (1):
  wifi: mac80211: fix potential key use-after-free

 net/mac80211/cfg.c | 3 +++
 net/mac80211/key.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

-- 
2.34.1