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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2022-09-01 17:59:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-07 16:23:22 +0200 |
| commit | f57004b9d96755cd6a243b51c267be4016b4563c (patch) | |
| tree | 494fdc556d866c20541fda86e56315013fa6f3ab /kernel/bpf/reuseport_array.c | |
| parent | 6690986da1e21f3bebe1aaa54a70c636f40343b5 (diff) | |
usb: gadget: f_fs: stricter integer overflow checks
This from static analysis. The vla_item() takes a size and adds it to
the total. It has a built in integer overflow check so if it encounters
an integer overflow anywhere then it records the total as SIZE_MAX.
However there is an issue here because the "lang_count*(needed_count+1)"
multiplication can overflow. Technically the "lang_count + 1" addition
could overflow too, but that would be detected and is harmless. Fix
both using the new size_add() and size_mul() functions.
Fixes: e6f3862fa1ec ("usb: gadget: FunctionFS: Remove VLAIS usage from gadget code")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YxDI3lMYomE7WCjn@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/bpf/reuseport_array.c')
0 files changed, 0 insertions, 0 deletions