In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: set up the TX info early to fix failure paths
The previous commit 2c51457d930f ("wifi: mac80211: free ack status
frame on TX header build failure") cleaned up the leak, but still
left the code a bit messy and the failed SKB didn't get reported
to userspace.
Fix this up by initialising skb->cb[] earlier, which allows using
ieee80211_free_txskb() and therefore reports it for the failure
in ieee80211_build_hdr(), and unifies the ieee80211_skb_resize()
failure path with it.
References 6
https://git.kernel.org/stable/c/03d67414bd05b86029afc14535238a9393eac1c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0fb37d2b6cb829cebdaea80f39011469f474bdcc
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/36e6f0a5e6d7238f4023e77f423c1c1414374309
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/420fcc2fdeae6ecd682d2b1605a0a54c88aed4aa
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/50d3d79dc0743b616afb00d01a626c76758721f7
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/df711e9fa20d7e996711c7f43a11a71805bef78d
416baaa9-dc9f-4396-8d5f-8c081fb06d67