TARGET_TMPM46B/i2c_api.c does not check result of realloc

[janjongboom]

Description

In the TMPM46B target gI2C_LTxData is reallocated here but the return value is not checked. If this fails it could lead to writing in uninitialized memory.

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-966

[0xc0170]

cc @ARMmbed/team-toshiba

[soramame21]

to @ganesh-ramachandran Could you check this issue please?

Hi @0xc0170, @soramame21,

We have fixed above issue if reallocation fails (PR #10048).

However, we are rewriting the I2C HAL driver code to support I2C slave and I2C asynchronous, in which we will remove the dynamic memory allocation mechanism.

[soramame21]

👍

[ciarmcom]

Thank you for raising this detailed GitHub issue. I am now notifying our internal issue triagers.
Internal Jira reference: https://jira.arm.com/browse/IOTOSM-2259