Description: cifs: Fix UAF in cifs_demultiplex_thread()
References:
Notes:
 carnil> Introduced in ec637e3ffb6b ("[CIFS] Avoid extra large buffer allocation (and
 carnil> memcpy) in cifs_readpages"). Vulnerable versions: 2.6.16-rc2.
 bwh> Duplicate of CVE-2023-1192.
Bugs:
upstream: released (6.6-rc3) [d527f51331cace562393a8038d870b3e9916686f]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: released (6.1.56) [908b3b5e97d25e879de3d1f172a255665491c2c3]
5.10-upstream-stable: needed
4.19-upstream-stable: needed
sid: released (6.5.6-1)
6.1-bookworm-security: released (6.1.64-1)
5.10-bullseye-security: needed
4.19-buster-security: needed