core: fix out-of-bounds access of dump_ctx

Problem: in the case of no UTA running, the buffer of dump_ctx will
be allocated with 0 size and passed to init_dump_ctx(). That causes
buffer overrunning.

Solution: Check buffer size before allocate the buffer. If it's 0,
return TEE_ERROR_ITEM_NOT_FOUND.

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Tested-by: Weizhao Jiang <weizhaoj@amazon.com>
Signed-off-by: Weizhao Jiang <weizhaoj@amazon.com>
1 file changed
tree: 2a41de6fca1a6522740694f88381c97e99098ddc
  1. .github/
  2. core/
  3. keys/
  4. ldelf/
  5. lib/
  6. mk/
  7. scripts/
  8. ta/
  9. .checkpatch-camelcase.git.
  10. .checkpatch.conf
  11. .gitattributes
  12. .gitignore
  13. CHANGELOG.md
  14. LICENSE
  15. MAINTAINERS
  16. Makefile
  17. README.md
  18. typedefs.checkpatch
README.md

OP-TEE Trusted OS

This git contains source code for the secure side implementation of OP-TEE project.

All official OP-TEE documentation has moved to http://optee.readthedocs.io.

// OP-TEE core maintainers