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| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2023-08-11 18:52:29 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-09-08 17:03:09 +0200 |
| commit | 3c2c599c79eea9cebd7280140a5901fe3734e94e (patch) | |
| tree | fb47cc53bace6356f2350d9cd169bbdefe7952f3 /docs/devel/secure-coding-practices.rst | |
| parent | 13d9f6dca08a38e9258b6328f3ad61bdb8e19619 (diff) | |
| download | focaccia-qemu-3c2c599c79eea9cebd7280140a5901fe3734e94e.tar.gz focaccia-qemu-3c2c599c79eea9cebd7280140a5901fe3734e94e.zip | |
block/vpc: Avoid dynamic stack allocation
Use autofree heap allocation instead of variable-length array on the stack. Here we don't expect the bitmap size to be enormous, and since we're about to read/write it to disk the overhead of the allocation should be fine. The codebase has very few VLAs, and if we can get rid of them all we can make the compiler error on new additions. This is a defensive measure against security bugs where an on-stack dynamic allocation isn't correctly size-checked (e.g. CVE-2021-3527). Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> [PMM: expanded commit message] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-ID: <20230811175229.808139-1-peter.maydell@linaro.org> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs/devel/secure-coding-practices.rst')
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