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Subject: media: atomisp: gmin_platform: fix out_len in gmin_get_config_dsm_var() Author: Dan Carpenter <dan.carpen...@linaro.org> Date: Fri May 26 12:53:23 2023 +0100 Ideally, strlen(cur->string.pointer) and strlen(out) would be the same. But this code is using strscpy() to avoid a potential buffer overflow. So in the same way we should take the strlen() of the smaller string to avoid a buffer overflow in the caller, gmin_get_var_int(). Link: https://lore.kernel.org/r/26124bcd-8132-4483-9d67-225c87d424e8@kili.mountain Fixes: 387041cda44e ("media: atomisp: improve sensor detection code to use _DSM table") Signed-off-by: Dan Carpenter <dan.carpen...@linaro.org> Signed-off-by: Hans de Goede <hdego...@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org> drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- diff --git a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c index bc2dd96176d0..93bfb3fadcf7 100644 --- a/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c +++ b/drivers/staging/media/atomisp/pci/atomisp_gmin_platform.c @@ -1359,7 +1359,7 @@ static int gmin_get_config_dsm_var(struct device *dev, dev_info(dev, "found _DSM entry for '%s': %s\n", var, cur->string.pointer); strscpy(out, cur->string.pointer, *out_len); - *out_len = strlen(cur->string.pointer); + *out_len = strlen(out); ACPI_FREE(obj); return 0; _______________________________________________ linuxtv-commits mailing list linuxtv-commits@linuxtv.org https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
