tree cb221a4f047d84ef522bde3c0954543d52914d71
parent 00fdb0fd07b6d5959d8ed0ebce89d43908d8c51a
author Hsiu-Chang Chen <hsiuchangchen@google.com> 1690255821 -0700
committer Hsiu-Chang Chen <hsiuchangchen@google.com> 1702823201 +0800

qcacld-3.0: Add a sanity check to prevent integer overflow

Currently in the function hdd_send_roam_scan_channel_freq_list_to_sme,
the num_chan variable is declared as uint8_t and is incremented
for each nested attribute PARAM_SCAN_FREQ_LIST.

If the number of attributes sent by userspace is more than max value
of uint8_t, then an integer overflow occurs.

To avoid this issue, add a sanity check to see if num_chan has reached
SIR_MAX_SUPPORTED_CHANNEL_LIST before incrementing variable.

Bug: 314786500
Test: Regression Test
Change-Id: I4085338df68c80f316909f85c6c04e3ac8b93cc2
CRs-Fixed: 3568577
Signed-off-by: Hsiu-Chang Chen <hsiuchangchen@google.com>