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| author | Leah Rowe <leah@libreboot.org> | 2026-03-13 17:56:18 +0000 |
|---|---|---|
| committer | Leah Rowe <leah@libreboot.org> | 2026-03-13 17:56:35 +0000 |
| commit | 130b25e676cbd69f26d20f3ce13e89805ec583a6 (patch) | |
| tree | 6bb4cd195f07624fa8f094a4b64beff593f5b369 | |
| parent | dfbdffc6a620b383f8a2ecb5cf6d564073a4b9a0 (diff) | |
util/nvmutil: safer offset check (use subtraction)
don't allow overflows
Signed-off-by: Leah Rowe <leah@libreboot.org>
| -rw-r--r-- | util/nvmutil/nvmutil.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c index b917776c..0185150f 100644 --- a/util/nvmutil/nvmutil.c +++ b/util/nvmutil/nvmutil.c @@ -1764,7 +1764,7 @@ io_args(int fd, void *mem, size_t nrw, if (off < 0 || off >= gbe_file_size) goto err_io_args; - if ((off_t)(off + nrw) > gbe_file_size) + if (nrw > (size_t)(gbe_file_size - off)) goto err_io_args; if (nrw > GBE_PART_SIZE) |