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util/nvmutil: add negative off check to prw

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Signed-off-by: Leah Rowe <leah@libreboot.org>
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Leah Rowe
2026-03-13 23:22:21 +00:00
parent 7fe667789a
commit f8ba774796
1 changed files with 1 additions and 0 deletions
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util/nvmutil/nvmutil.c
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@@ -1684,6 +1684,7 @@ prw(int fd, void *mem, size_t nrw,
goto err_prw;
if (fd < 0
|| off < 0
|| !nrw /* prevent zero read request */
|| nrw > (size_t)SSIZE_MAX /* prevent overflow */
|| (unsigned int)rw_type > IO_PWRITE)