[SRU Focal,Jammy,OEM-6.1,Lunar,Mantic 0/1] CVE-2023-6606

[Thadeu Lima de Souza Cascardo]

[Impact]
An out-of-bounds access in cifs filesystem may lead to crashes or
information leak.

[Test case]
A PoC from the kernel.org bugzilla was used and a different error message
was present in dmesg as expected:

[  518.358312] CIFS: VFS: checkSMB: can't read BCC due to invalid WordCount(240)

[Backport]
Clean cherry-pick on all kernels. For 5.15 and earlier kernels, the file
has been moved, hence the second patch version.

[Potential regression]
Failure to mount cifs or filesystem corruption on cifs mounts.

Paulo Alcantara (1):
  smb: client: fix OOB in smbCalcSize()

 fs/smb/client/misc.c | 4 ++++
 1 file changed, 4 insertions(+)

-- 
2.34.1